Tips, Tricks & Piano Playin' Resources

Nursing home volunteering- good piano songs?

I recently called a local nursing home, I'm intending to volunteer there soon. While I'd like to spend some time chatting with them, I mostly want to put my piano skills to use. I mostly just know classical music, though. Should I still play this stuff, or will I just bore them? Should I really just try to stick to 40s-50s music?
Where could I find a good list of older popular songs they'd like? Or esp., does anyone also know a nice compilation of fairly easy music, stuff I could learn quickly?

And finally (last question!, I promise), how would older people feel about piano lessons? I've heard of older people taking up painting or something similar in their 70's, so I wondered whether some of them would appreciate learning piano if it were free and I kept it fairly fun. But is it too late for lessons, or would most of them feel that it's too late? I wouldn't want to frustrate or annoy them.

Any advice from someone with experience would be helpful. Thanks!

I've worked in a Nursing home for 8 years now and I can tell you that they will love that you come to spend time to talk and play for them! I think its best is while I could name a lot is to go there and play your music ask them what they like what songs have special meaning you can make a list and find the sheet music on-line and learn for next time!