Bad Romance, the song itself deserves all the praise it gets, but it's success and impact is by far the most overrated, people think it's her signature song....That would be true if Poker Face didn't exist.
actually i feel as if Paparazzi is her most overrated song, by everyone not just LMs (although LMs praise it like it's god's gift to the pop music genre). it's cool song and everything but there have been better songs and she has totally outdone herself since then