Recommended

1. Pistachio madeleines from the bakery at Balthazar. Astoundingly good and not too pricey. They're probably also the least messy thing you can buy at the bakery, where everything is fantastic but often too flaky or sticky to eat at one's desk.
2. Staying the hell away from the Kid Robot store. I love Kid Robot's toys, but that's kind of the problem. The SoHo store itself is exquisitely designed to gently but firmly separate me from my money, and I am powerless to resist.
3. Amy Winehouse, specifically Back to Black. Thanks to Rands for tipping me off.
4. Not over-using Ajax on your website. Yes, it's neat stuff. But just like Flash, Ajax is something that shouldn't be used just for the sake of using it.
5. Twitterific 2.0. Just download it, already.