Now is the time for your wife to do any hobby-type things she likes, because she's not going to get another chance for at least a year. I hope she has some hobbies that require reclining? Sewing, knitting, designing houses, learning an instrument, whatever.
I would go for comedies, and stay away from anything where unhappy things happen to children! (I could not even watch my favorite tv show, ER, until long after I had had my son) I'm not sure I would recommend Simon Birch; for all that it is heartwarming, it still ends with a child dying. (Sorry if that's a plot spoiler for anyone)
Anything she's always wanted to do but never had the patience or time for? Now's her chance. And if she really can't sit still, Kat's meditation tapes sound like a good idea. (I was a basket case because I had always supported myself and my husband; didn't know what to do when I couldn't work any more. I think this is a common crisis among women who find themselves on bedrest) Actually, most of Kat's message was right on.
One suggestion: if you can keep the house, especially the room she's trapped in, super-clean, it will be much less stressful for your wife. There is nothing worse than being stuck in bed with the "nesting urge" at full throttle, and watching your house turn into a landfill. Damn near killed me; I kept getting out of bed to clean it up.
If you can put the computer near her, go for it. The internet is the only way I survived my five months in bed last year. There are a number of good parental e-villages out there; I can personally recommend ParentsPlace.com.
Link to the main page: http://www.parentsplace.com/
Link to message board for women expecting in March of 2000: http://boards.parentsplace.com/cgi-bin/boards/mar00
Here's one that is all women on bedrest: http://boards.parentsplace.com/cgi-bin/boards/momsonbedrest
Oh! Binoculars! Think "Rear Window" here. Put the bed near a window and spy on the neighborhood. :-)
Sorry if I rambled... Best of luck to you and your wife.