I've seen that damn cart ride in Skyrim so many times that Ralof and Hadvar are basically family. I consider the alternative start mod an absolute requirement now.
I love Thief and Thief 2 but there are a few levels in there (Thieve's Guild, Trace the Courier) that are pretty dull and uninteresting to replay. They're the songs you're still tempted to skip on otherwise perfect albums.