Bob Rivers (born 1956) is a well-known American rock-and-roll radio personality in the Pacific Northwest, as well as a prolific producer of parody songs (most famously parody Christmas songs, which have included such gems as "The Twelve Pains of Christmas", "Wreck the Malls", "There's Another Santa Claus," "Teddy the Red-Nosed Senator", and "Manger Six".) His other claim to fame is songs about the Seattle Seahawks football team.
The Other Wiki has an extensive article. He has his own website. He can be heard on-air weekday mornings by clicking the listen button on the radio station's website.Interestingly, He's also a Contest Winner Cameo on an episode of Star Trek: Enterprise.
His work is often misattributed to "Weird Al" Yankovic, despite containing lyrics and themes that Weird Al has said he will not use (such as an entire song about screwing sheep and drug references ("What if god smoked cannabis?")). He also uses more "classic" rock (like the Beatles and Led Zeppelin) as the basis for his parodies, and uses tribute and cover bands to sing the spoofs (so they sound as close as possible to the song they're spoofing), while Yankovic tends to use Top 40 pop music and sings on all of it.