Chris Cornell - Scream
The lead singer of Soundgarden and Audioslave decided he wanted to make a pop album produced by Timbaland for...some reason? I'll admit I have a slight soft spot for it, but it is just a strange album that is musically all over the place and just does not play to Cornell's strengths at all. I think the real low-light of the album is the opening track, "Part of Me", which features the guy who wrote/sang such classics as "Black Hole Sun" and "Fell on Black Days" singing lyrics such as "Oh, that bitch ain't a part of me" over and over with generic electronic club beat. It was no surprise not long after this album that Soundgarden just reunited.
Jack White - Boarding House Reach
I honestly have no clue what the general consensus on this one is, but I personally found it to be a complete mess of half finished experiments that would better be left as bonus tracks on some career spanning box set in the future. I'm not opposed to artist trying out different genres, there aren't many Bowie albums I dislike after all, but this feels like just messing around just to mess around with no inspiration or ideas. Definitely bumped Jack White off my "must check out everything they release" fast.
Not to be the guy, but can we nominate Weezer's entire discography after the Green Album?