Original album: Blackout! (1999)

Why the sequel was made: In the early to mid-2000s, Meth and Red both spent a lot of time doing things other than rapping. So it took them a decade to release the follow-up to their collaborative album. "We was out venturing," Redman said. "Starting other careers. We can't depend on the rap game. We did a movie, TV show-venturing out. Now we back. We ain't left. We're coming at the right time."

Was it as good as the original? No. To be fair to Meth and Red, Blackout! 2 was way stronger than we expected it to be. Even though we knew they had producers like Pete Rock, Havoc, Erick Sermon, Buckwild, and Bink! behind the boards, we weren't really expecting much from it, and Meth and Red proved that they still had great chemistry in the studio when they came together for it. But the palpable buzz that their first project had—which was due in large part to the fact that they were both at the top of their games back in the late-1990s—really helped their first collaborative effort soar higher than their second one did.