I loved Mos back in the day too and wish he didn't suck now but I have to say that amongst all of the rappers-turned-actors, he is by far the best. His turn in the Guide was pretty good and he was good in 16 Blocks as well and his new one looks to be very good and even though I cannot stand Jack Black, I think I will see this as I liked Eternal Sunshine of the Spotless Mind, who is the same guy who directs this:

http://www.youtube.com/watch?v=ExRplxd6zXc