Bragtime! At last count we had 41497 quicktime commercials in total, so it's high time to hang up the brag-sign here. Adland's Commercial Archive, including the superbowl commercial archive now has over fourty thousand ads in it. Yikes! No wonder I keep having to get bigger servers, aye?
You can browse the archives by month and year or use the advanced search to find all commercials for "bud", for example. Just change the "bud" in that URL to what you want to search instead.
OR search commercials only WITH images via this link - no advanced options there.
Here, I'll teach you a new trick in the often overlooked search engine - click on advanced search and then check the box for commercials to get only commercials in your returned results. Much better aye?