It seems that every year there's at least one undeserving team that gets to play in a BCS Bowl. Sometimes it's proven in the bowl itself, while sometimes it's already been established in the preceding games.
It's important to note that this list does not merely include teams that were blown out in their BCS games.
The Nebraska Cornhuskers lost to the Miami Hurricanes in 37-14 in the 2002 Rose Bowl, but they were facing perhaps the best team in college football history, a team that would have blown out almost anyone.
This list is the worst teams that made it to BCS games. Many of them were in fact blown out in January, while some of them did put up good showings in the BCS but are included because they were undeserving of the bids in the first place.