When the first classic Warner Bros, cartoons appeared on DVD a year ago, some hardcore animaniacs threw brickbats. Where was ''What's Opera, Doc?'' What about ''One Froggy Evening''? Well, hello mah ragtime gal, they're both right here in The Looney Tunes Golden Collection: Vol. 2, with commentaries and making-of mini-docs for each. Bulging with 60 shorts on four discs (the smart shopper's version, The Looney Tunes Spotlight Collection: Vol. 2, puts half that number on half the discs for nearly half the price), Goldendigs deep into the Bugs Bunny oeuvre and possibly too deeply into the Road Runner-Coyote and Tweety-Sylvester series, both Bach-like variations on a theme that gets old surprisingly fast. Luckily, disc 4 is a mother lode of pop-culture satires that includes the ruthless Fantasia parody ''A Corny Concerto'' and the brilliant Tex Avery owl-doing-Jolson comedy ''I Love to Singa.'' Devotees of early black-and-white Warner cartoons may feel shortchanged, but at least they get the surreal 1938 ''Porky in Wackyland,'' and this Daffy Duck fan rejoiced at finding ''The Great Piggy Bank Robbery'' with its gallery of Duck Twacy grotesques. (''Neon Noodle? Neon Noodle!'')
EXTRAS Many shorts include scholarly commentary; the ''Robbery'' track is by Ren & Stimpy creator John Kricfalusi. Featurettes on animators Avery and Bob Clampett and sound-effects whiz Treg Brown; animated sequences from the old Bugs Bunny Show (yes, the ''Overture, curtain, lights'' number is here); a two-part not-so-special 50th-anniversary TV show from 1986; ''Adventures of the Road Runner'' 1962 TV pilot; extra cartoons including the recent ''Daffy Duck for President'' (feh) and the bizarre public health PSA ''So Much for So Little,'' a 1949 Oscar winner.