HBO presents the fourth season of the Emmy(R)-nominated comedy series that fuses live routines with scripted film material in irreverent, outrageous editions. Each installment of 'Mr. Show' showcases Bob Odenkirk, David Cross and an ensemble cast delivering an anything-goes montage of offbeat, out-of-kilter sketches. In Season Four's scenarios, Bob catches David high on 'medical marijuana'; murder and mayhem result after Bob abducts a student and takes his place as assistant to the law-school teacher; 'rehearsal Bob and David' are corralled into cages while 'Live Bob and David' watch; Bob reads racy literature to blind Karen, but David barges in and interrupts their intimacy. After Bob and David duke it out with words, we find out that Karen isn't blind, that David is, and that Bob is gay; and Bob screws up on a kidnapping--and demands $1,000 ransom for his own toe.