According to Nielsen, last year the top US mobile handsets list looked like this (the % numbers are "embedded subscriber base"):

1. Motorola RAZR V3 series (V3, V3c, V3m, V3i, V3i DG, V3)    9.3%
2. Motorola MotoKRZR series (K1m, K1)    2.0%
3. LG VX8300 series    1.6%
4. Apple iPhone    1.5%
5. LG VX8500 series (Chocolate, VX8500, VX8550)    1.2%
6. RIM BlackBerry 8100 series (Pearl,8110, 8120, 8129)    1.2%
7. Nokia 6101 series (6101, 6102, 6102i)    1.1%
8. LG VX8350    1.0%
9. Motorola V325 series (V325, V323, V325i, V323i)    0.9%
10. Nokia 6010 series    0.9% 

In 2009 (through Q3) the list has changed, with the iPhone now moving into first position:

Significantly, Nokia, which had two handsets on the list, is gone entirely and there isn't a Windows Phone present either. Of course, neither is there an Android handset but I would imagine that we'll see one or two Android handsets at least next year. Palm isn't there and isn't likely to be next year either.

Nokia is probably done in the US, as I've argued. The real question is whether Microsoft will have phones on this list next year. If not it will be panic time in Redmond.