It is no longer possible to transfer Membership Rewards points directly to Marriott Rewards, however there are ten Marriott awards available with Membership Rewards points, ranging from $100 Marriott Bonus Bucks Coupon for 10,000 points, to stays at varying levels of properties for 30-60,000 points per night, to a week in Aruba for 400,000 points ...
http://www.membershiprewards.com/cat.../?Ntt=marriott
There are 50+ separate Ritz-Carlton awards...
http://www.membershiprewards.com/cat...ints%7cASC