Speed Racer:
You need to know going in that it's got plenty of cheese, and a lot of the fighting and action are very campy.
Here's a good Spritle clip to give you an idea:
http://movies.yahoo.com/movie/1808406004/video/7633142/It's more video game than Anime to me, and reminds me of Tron that way (but it's not that good.)
It does have some good things in it though, as one of the main themes is art vs commerce.
Do you do what you do because you love it, or do what you do to make money?
Once money enters the equation, can it still be art?
That theme was probably my favorite thing about the movie.
Not being able to tell what was happening in the races, or who was winning...NOT my favorite thing.
If you're looking for a family movie where good triumphs over evil, this is "ok."