what i liked- Barry White's appearance and him helping Bart and Lisa, "Gentleman, start your whacking!", "Evil homer" scene, "They should call this book Johnny Deformed", the plot as a whole is really nice, the ending, Skinner tricking Bart, Nelson and the bullies in a closet, "Keep stuffing your shirt with dirt till i get back", etc.
good episode written by my favorite writer of the simpsons, John Swartzwelder. has a lot of funny moments and a good plot. A+