Two Second Life companies have made Bento enabled hands. This means you can move your fingers. I didn't think it would be a big deal until I tried it. As you can see from the video, it's pretty cool. Keep in mind, you can only see it on a Bento enabled viewer. Linden Labs has a release candidate and Firestorm has an alpha version out for testing. You must be a member of the Phoenix-Firestorm Preview Group to test the alpha.
Back to the hands, a free version is made by Kuso/Oracul. They come with a hud with which you can change the position of your fingers. This hud has 2 pages. Page 1 is static animations, and page 2 animates the hands. You can apply an animation to 1 hand or to both hands. The detail is not great, and they do not appear to be compatible with Omega. They also leave a gap on the Maitreya body.
The other option is Vista Pro hands. They look great, are compatible with Omega, and fit the Maitreya body quite well. The nails are also Omega compatible. They come with 4 stand animations that you can put into your AO, so that whenever they come up, you move your fingers automatically. They also come with a hud for static animations.
Here's the interesting part: The Oracul hud will work with the Vista hands. This means, you can use the animations on page 2, and have your hands do all kinds of things in combination with your AO. I used the Vista hands in the video above. Each one is playing a different animation from the Oracul hud. Granted, you may not want to look like the movie above all the time, but it is fun to have the option.
Dress is from Go!
Hair is from Bizarre Creations
Necklace is from Pixel Box
Hairbase is from Amacci
Caledon tartan omega nail applier is here
Wind light: Twilight on the Moors (Custom)