They've been great to the Wii. In my opinion Madden was the best example of motion controls at launch, they simply nailed them. Ubisoft may have had the most games, but they didn't seem to put much effort into them (Red Steel felt like they were trying, but ran out of time; it was confirmed a launch title more than a year before launch and I think they just underestimated the time they would need. It sold well enough to guarantee a sequel, though, so hopefully they can show us what the game was supposed to be.)
EA has had some real quality releases, with controls that weren't just shoehorned in and actually made the game better and more fun (Madden, Godfather, etc.). Everyone always says that EA doesn't innovate and just rehashes things (especially in regard to their sports franchises), but the Wii support they've shown so far makes me laugh at those who say that. Even Madden, the lightning rod for gamer hatred that it is, is getting real effort for the first time on a Nintendo platform, with 08 having the controls even further refined, a new party mode, the telestrator (awesome), Wii Sports-like Family control options, and, to top it all off, online play (only 4 years behind everyone else!).
In addition to Madden, FIFA will be online with equally intriguing motion controls, and NBA Live has the motion controls as well while I haven't heard anything about whether or not it will be Wi-Fi enabled. Also, MySims looks fantastic, I absolutely love the building mechanic, something that would be a lot tougher without the Wiimote.
Keep the goodness coming, EA!