NEEEEILLL MOTHERFUCKING HAAAAAMMMMBURGERRRR!!!!
AMERICAS FUNNYMAN!!!! I'd recommend his dvd over his cds since seeing him perform is so fucking great.
Unless you've seen him peform any other time ever, I'd recommend Todd Barry's "Medium Energy" too. He seems to only have one set of jokes for his entire career span though
As for David Cross' cds, I'd go with "Shut up you fucking baby" over "It's not funny." Both are great and all. :/