Australia - Langer, I guess Ponting and Hussey could do it also
England - John Crawley used to be a pretty useful backup when he was playing...among the current crop, Trescothick would do it normally, now though I'm not sure.
New Zealand - Sinclair
South Africa - A.B. de Villiers
West Indies - Wavell Hinds if he was playing, otherwise maybe Chanderpaul/Lara dunno really, Jimmy Adams used to keep in Ridley Jacobs' absence
Bangladesh - dunno
Zimbabwe - They've got a few..Taylor, and a coupla others...dont know their names though
India - Dravid, although recently they've played both Dinesh Karthik and Dhoni in their ODI team
Pakistan - Younis Khan, and Shoaib Malik has been practising to improve his already solid all-round game
Sri Lanka - then only side that can do it EASY...Sangakkara, Dilshan, Tharanga all pretty accomplished keepers.