Tales of the Abyss. Dis tew much, the last 15 hours or so were incredibly frustrating. You travel from location to location just to watch a 1 minute cutscene or read some dialogue, and then its back to traveling back and forth. Plot wise, the mean guys wouldn't budge and die already... After you beat them all multiple times previously. Great game for 40 hours, terrible design all the way to the 60 hour mark/finale.
Xenogears also dragged on for a little too long. I know they were very ambitious and wanted to tell a full story, but I ended up logging in 63 hours even with the terrible second disc. The fact that the combat is slow, the character moves slow, the text speed is slow... And you get 20 hours in which you get to actually play 8 of.