Not nearly as bad as I thought it would be. Jackman plays a great Wolverine as always (even though he is way too tall for the part), pretty action packed...particularly in the sense that they let Wolverine go loose in this film quite often, were as in the X-Men movies he was more reserved. One of the things I thought I would end up hating I ended up liking: Sabertooth. Although I still think the guy was still a bit small, I think he played a decent Creed and they did a good job of presenting him. Like Knorwood stated, once the movie got going Creed wasn't a concern.
Sadly though, this movie is seriously flawed from a fanboy perspective: WAY too many deviaitons from the original story on a lot of counts:
Biggest complaint # 1 - Deadpool. If you thought they screwed him up by just going on the previews, just wait until you get further into the movie. There's even a point where you think that the writers/director are going to correct their mistake that they made with Deadpool originally....only to find out that they actually wanted to burn this character into the ground further. Complete and utter FAIL.
Biggest Complaint #2 - Gambit (or as I like to call him, the "Venom" of the Wolverine movie). They guy who played him started off some-what decent with a Southern accent and all....only to drop that accent (literally) and any resemblance of the character halfway through his act. Like Venom in Spiderman 3, Gambit was put in their for cash purposes (I mean they whored his name in every trailer that they could get out there). It looked as though the intent of throwing Gambit in there was to maximize on such a popular character, while at the same time giving little purpose or thought, and little energy and devotion in any effort to portray this character on the big screen. Short screen time + bare minumum effort in bringing this character to life = Kentucky Fried FAIL.