Spotted in Doc Searls Weblog:

Both have had their teeth whitened. Biden also appears to have had a facelift and hair plugs. Nothing wrong with that, but hey, we're watching a hi-def TV screen here.

I saw someone writing about this earlier this year, during an Obama/Clinton debate. It's small stuff now, but I think that by the next time around, the whole "1960 Nixon 5 O'Clock shadow" thing will be possible. This has PR implications beyond politics - anytime you get interviewed from here on out, your flaws and issues are going to be magnified.