A co-worker brought up "Law Abiding Citizen" while we were at lunch on Friday because she thought I would like the twist, luckily it came instantly on netflix, so I added it, and when we were talking to another coworker later in the day, she thought "Shattered" was similar, as far as a twist.
I, by far, liked Shattered better than Law Abiding Citizen, because I couldn't guess the twist in Shattered. Didn't see it coming, at all. Law Abiding Citizen's twist I saw coming, but it was still entertaining.
Would recommend both movies. Neither are art house, or incredible acting or cinematography, just pure entertainment.