Ryan Reynolds at 'A Funny Thing Happened On The Way To Cure Parkinson's' 2008 Benefit For The Michael J. Fox Foundation at the Sheraton New York Hotel and Towers. New York City, USA - 05.11.08

Reynolds is auctioning off a pair of dates for X-Men Origins: Wolverine and The Proposal, with the highest bidder for each sale winning a night out on the arm of Scarlett Johansson's husband.

All proceeds from the auctions will benefit the Michael J. Fox Foundation for Parkinsons Research.

Reynolds is the celebrity spokesman for Team Fox, the fundraising arm of the charitable organisation, and it's a cause close to the star's heart - his father also suffers from the degenerative brain disease, reports People.com.

Back To The Future actor Fox has battled the illness since 1991.

Source: WENN