Well, I've seen a few Looney Tunes out there. Mostly they are like a culmination on other older black-n-white cartoon shows.
I do remember seeing LT by itself ... I just can't remember where it was ... maybe it was Tower Records, as they seemed to have everything (all the time) although, Tower is now no more. I haven't seen anything single for LT since.
My cartoon DVDs List ...
Pink Panther (Classic Cartoon Collection)
Scooby Doo Where Are You (Volumes 1-3) also, several cartoon movies of Scooby Doo as well.
Spiderman (Original 1967 Collection)
The Original SuperFriends and The Legion Of Doom
The SuperFriends Limited Edition (Seasons 1-2)
Speed Racer (Volumes 1-5)
He-Man and The Masters of The Universe (Season 1, Volumes 1-2 and Season 2, Volumes 1-2)
She-Ra Princess of Power (Season 1, Volumes 1-2)
Schoolhouse Rock Collection
Underdog
Josie and The Pussycats (The Complete Series)
The Woody Woodpecker Classic Cartoon Collection
The Mask