Definitely launch Skyrim. It was my first time with the Elder Scrolls franchise (or any Bethesda game for that matter) and I knew that they were infamous for being buggy... but I had no idea how bug ridden the game actually was.
My least favorite bug was in the "Break of Dawn" Quest in where you speak with Meredia after purging the temple. I had to restart about 10 times because instead of bringing me back down to the land, the game just dropped me to my death. Quite infuriating. @_@
More recently, a game with a few bugs was Batman: Arkham Origins. Luckily I didn't run into any game breaking or save corrupting ones, but here's a picture of batman standing on an invisible van. 








