Can anyone recommend a US accountant to help file US personal taxes associated with Bitcoin trading?

Here's one: Dewey, Cheatem & Howe

err ..., here maybe:
Jankovic LLC - The First CPA Firm to Accept Bitcoins
- http://www.jankovicllc.com/apps/blog/jankovic-llc-the-first-cpa-firm-to

they accept bitcoins so I would guess they'ld know how to account for them.

If not, here's a starting place:
- https://en.bitcoin.it/wiki/Tax_compliance

But if you do find one, you could suggest they participate in this webcast course:
- http://www.lawline.com/cle/course-details.php?i=1942