I've begun reading Carl Hiassen and wonder what other people believe are the 'funniest' or 'most humorous' crime novels out there. Steve Hamilton's stuff is great as well, but I feel like I'm missing out on a bunch.
Tim Dorsey and his 'serial murderer' Serge A. Storms. Talk about inventive, hilarious way to rid the world of its biggest creeps, Serge will do the job while he takes you on his incredible tours of Florida.
Loren D. Estleman's Peeper; is one PI for the ages. Funny stuff.
I just read an excellent humorous crime novel over the weekend, High Season, by Crimespace's own Jon Loomis. In the interests of full disclosure, Jon and I have been friendly here on Crimespace for about a year now, but this really is a good book. He manages to tread the line between funny and homicide without lessening the effects of either. Highly recommended.