Quite a few. Those that come to mind are :
The Ethiopian Airlines 767 which ran out of fuel (as a result of a hijacking attempt) and ditched off the Comoros. That was about 12 years ago I think.
About 40 years ago (I don't remember it!) a Tupolev 154(?) was ditched into the Neva river near Leningrad. I think it was icing.
Tarom also landed a TU154 on water somewhere off the coast of West Africa in the early 80's.
There was an Air Florida 737 (?) which landed in the Potomac River in Washington, also wing icing.
JAL dropped a DC8 into San Francisco Bay about 30 years ago. I believe the a/c was recovered and restored to airworthiness. (as per post #2 by Brian Abraham)
Last edited by Capetonian; 11th Jan 2012 at 09:16.