The last two movies are . . . okay. They lack the engaging storytelling the first two (especially the second) have, but I will say that the third movie is one of those movies that's really only good for a quick laugh, because it puts more emphasis on the jokes and humor than it does the storytelling (in other words, if you tried watching it stoned, you'd literally die from laughing). The last one feels tired and out of steam, and the AU storyline is really unusual, but I think it was wise they ended the franchise when they did - especially considering they were originally planning on going on for six or eight movies.