LARGE SOFTWARE, A SAN DIEGO-BASED software company, is breaking new ground with celebrity endorsements. The company just signed a deal with YouTube comedian Ed Bassmaster to promote its software. Bassmaster has become a legendary YouTube entertainer through his music videos and quirky comedy routines, which have garnered more than 10 million downloads. Under the endorsement deal, Bassmaster will promote Large Software's PC Tune-Up software through videos on www.largesoftware.com/bassmaster. In one video, called I Like Dogs, Bassmaster raps while rollerblading with his two dogs. At the end, he holds up a sign reading, We like dogs too, @ LargeSoftware.com. The endorsement deal also includes merchandise, newsletters and other marketing materials that feature the comedian and his cast of characters. Also under the deal, Bassmaster has also been named chief entertainment officer for Large Software.