Looks like Citibank is bringing out a pre-paid MasterCard similar to Amex's Colbalt Card. Check it out at https://www.cashcard.citicards.com/index.cfm
The iGen pre-paid Mastercard can be picked up at most any Rite Aid pharmacy http://www.mymccard.com/product.htm Also, MBNA issues two kinds of prepaid cards through AAA http://www.mymccard.com/product.htm