Thad has the Larry Doyle "Looney Tunes" cartoons up at his site. Beware. Some of these are worse than you could possibly imagine; the Porky Pig thing, which spends the last minute abandoning the plot and cutting away to a fake commercial for a "stuttering pig" record, is the worst of the worst.
To get the bad taste of those cartoons out of your mouth, here's a real Looney Tunes/Merrie Melodies cartoon that hasn't been pulled from YouTube yet:
The most bizarre Foghorn Leghorn cartoon ever made, "Fox Terror" (1957), one of only three Bob McKimson cartoons written by Mike Maltese (who of course usually wrote Chuck Jones's cartoons). Though the story has a premise that is typical of the series -- the conflict between Foghorn and the Barnyard Dog is exploited by a third party -- the way it plays out is so strange and surreal that it's like a Foghorn story rewritten by Luis Bunuel. It also has better animation than most McKimson cartoons from around this time; the opening scene with the Dog and the weirdly-designed chicken is quite nice (I think, though I could be wrong, that the animator here may have been Keith Darling, who McKimson picked up from Jones's unit).