The predecessor to the dearly departed Warner Bros. Studio Store was the WB studio's official mail-order catalog which was hawked by Daffy and Bugs in the late 1980s. These promos were featured at the start of select Warner Home Video VHS tapes around this time (the user who posted this to YouTube says this ad was on the Daffy Duck's Quackbusters video, for example). The one below features Daffy in a semi-parody of the old American Express commercials ("Do you know me?"). Mel Blanc is doing Daffy's voice here in one of his final performances as the LT characters. The highlight is a funny swipe at another famous (non-WB) cartoon star at the end of the ad.