I agree with Its a mad mad mad mad world!!
in Porky's 2 the mummy/police car scene is priceless
when I ws depressed from a death in the family I watched the 1st Mr. Bean movie.. it was the first time I laughed in a LONG time ( the mona lisa painting bit was hilarious) ( also look into Rowan Atkinson's bbc series,, funny to see "DR. HOuse" in them being funny)
try getting the series SOAP, its a constant laughfest!
also, think about the black & white classics, like Charlie Chaplin, I was dubious at 1st, but really really laughed at those.
also try the Cary Grant comedies, or Marx brothers, or 3 stooges.
there are plenty of older comedies out there.