Problem: Background: Shinedown is an American rock band from Jacksonville, Florida formed by singer Brent Smith in 2001 after the dissolution of his previous band. Smith, still under contract with record label Atlantic Records, recruited the band's original lineup of Jasin Todd as guitarist, Brad Stewart on bass, and Barry Kerch on drums. Consistent for the first two album cycles, a few lineup changes followed in the late 2000s, eventually stabilizing with Smith and Kerch alongside Zach Myers on guitar and Eric Bass on bass. The group has released five studio albums:
Context: The band didn't start work on a follow up album until 2005, with the band finding the touring lifestyle too hectic to start writing or recording material. This however, left the band with limited time to record new music, with their record label pressuring the band to get the album out in a six-month time period. Despite the time restrictions, the label did not pressure the band on the album's musical direction after the commercial success of Leave a Whisper. The band worked with music producer Tony Battaglia, and chose to go in a more "mature" and "stripped down" direction for the album's sound, Kerch describing it as just "pure rock". During the same time, the band was also approached by Hollywood Records to record a song for a tribute album for the band Queen, something the band agreed to out of their respect for the band. They recorded a cover of the track "Tie Your Mother Down", which was released on Killer Queen: A Tribute to Queen, released in August 2005.  The band released their second studio album, Us and Them, on October 4, 2005. The album debuted higher than Leave a Whisper on the Billboard 200 chart, peaking at number 23 versus Leave a Whisper's number 53 peak, but the album ultimately sold less than its predecessor. Despite this, the band's three singles from the album, "Save Me," "I Dare You," and "Heroes", ended up being more successful than their prior album's singles. The lead single, "Save Me" was the band's first to reach the number one spot on the Mainstream Rock Charts, and held the position for twelve weeks in a row. The second single, "I Dare You", also peaked at number 2 on the same chart. Notably, both songs were also the band's first to have crossover success on the Billboard Hot 100 charts, hitting 72 and 88 respectively.  The band again toured heavily in support of the album, including the 2006 iteration of the SnoCore Tour with Seether, Flyleaf, and Halestorm, and later opening for the Godsmack and Rob Zombie co-headlining tour of North America. Promotional support came from other areas as well; then-American Idol contestant Chris Daughtry performed "I Dare You" live on the show, helping its crossover appeal, and was used as a theme song for WrestleMania 22. The success of the singles helped propel sales of the album in the long run, ultimately being certified gold by the RIAA on November 13, 2006. and as of 2013, Smith had estimated that sales sat at approximately 990,000 copies sold.
Question: What is Us and Them?
Answer: their second studio album, Us and Them,

Background: Sylar (Gabriel Gray) is a fictional character and a primary antagonist of the NBC science fiction drama series Heroes. Portrayed by Zachary Quinto, he is a superpowered serial killer who targets other superhumans in order to steal their powers. He served as the primary villain of the first season and then as a recurring antagonist. Over the course of seasons two, three and four, the writers depicted Sylar attempting at various times and under different circumstances to become a hero or curb his desire to kill, undergoing relapses at various stages.
Context: Six weeks later, this Nathan starts to rediscover the other powers he had gained in his old life. Later, following Nathan's confession of being involved in the accidental death of his girlfriend Kelly Houston, her mother, Millie Houston, has him shot and buried in a shallow grave. When healed, Sylar emerges from the ground in his own body, suffering from amnesia. Picked up by the police, he is recognized and accidentally uses his powers to escape. He then encounters the "Sullivan Bros. Carnival" and Samuel, who take him in as one of their own. The carnival is hidden from Sylar's pursuers, and Samuel assures him he is safe in his new "home".  Once Sylar has rested, Samuel proceeds to show him around the circus, showing that everyone at the carnival has an ability. Sylar also meets Lydia, who he immediately hits it off with. Edgar, however, jealously attempts to outshow Sylar with his power, but is easily beaten. Samuel also notices that Sylar's memories are not his (in fact, Nathan Petrelli's). In an effort to awaken Sylar's true personality, Sylar is taken by Damien to the hall of mirrors, where he is forced to look at his past murders, starting with his mother. Repulsed, Sylar is unable to believe himself a monster. Samuel uses this to try and convince Sylar that he is a protector of the circus, and must remove threats such as the officer who attempted to capture him the night before. Sylar is told the officer is at the house of mirrors, and goes there to tell the man to leave. However, the officer shoots at Sylar, forcing an uncontrolled electric blast. Here, Sylar's killer instinct begins to take hold, but Sylar stops himself just in time for Edgar to cut the man into pieces. Later, Samuel formally makes Sylar a part of the circus family, baptizing him and letting him mingle with the others. Sylar and Lydia leave arm in arm for the night, much to Edgar's dismay.  In "Shadowboxing", the persona of Nathan returns, causing him to shapeshift back into Nathan's form while sleeping. Panicking upon finding himself at the carnival, he flies away, and is later shown arriving at Peter's door, asking for help. Arriving for work at his office, Peter and Nathan discover that no one has been looking for Nathan, as he had been on 'vacation' according to Angela Petrelli. The brothers are further surprised when the Haitian appears, and tells Peter to go see a storage facility for the truth of the situation. Here, Nathan and Peter discover the real Nathan's preserved body, which 'Nathan' touches and sees Sylar and Matt Parkman. They head to Texas to see Matt, who is at the hospital, in a coma.
Question: who loses their memory?
Answer:
Sylar emerges from the ground in his own body, suffering from amnesia.