american tax specialist or financial advisor

now here's a question i'm faced with that i'd thought i'd post to the board.

this would be best answered by a tax specialist in cross border issues or a financial planner with such experience.

what sort of tax implications are there in transferring a 401k or IRA to a canadian RRSP (registered retirement savings plan)? is there more than one way to deal with this?

the person would be a canadian citizen who worked in the usa for a while.

*que the jeporady music*