After this week's one-hour episode of The Office aired, there seems to be some disagreement online as to what exactly was the movie that the characters Jim and Karen thought was so horrible that they both bought a copy as a gift for each other. It was clearly a Bridget Jones movie, although you might need to know what the covers to both movies look like to recognize that it's Bridget Jones: The Edge of Reason.
Here's a higher resolution screenshot:
I remember reading people claim it to be everything from Jersey Girl, Just Friends, Planes, Trains and Automobiles, to You, Me and Dupree, etc. Taking a look at the DVD covers, I think it's pretty clear what movie it was.