http://www.hamandjam.org
Its kind of a mix of dod source and dod 1.3 with a bit more realism, but not too much so gameplay isnt affected. Currently British, Canadian, Polish and German forces in the game, with likely more to come in later releases. Oh and it requires teamwork, lots and lots of teamwork.
Also looking for more beta testers for the mod. possibly to have a 2nd beta test each week in an american time zone, current beta test times are based on UK time (GMT 0). If your intrested in getting involved in testing let me know, we always need more.
A few screenshots. Note, not everything is skinned yet.
more here http://www.moddb.com/mods/ham-and-jam
its also up for unreleased mod of the year, feel free to vote for it

some vids too:
[flash width=425 height=344]http://www.youtube.com/watch?v=EKfqmZVQSUo[/flash]
incase embed doesnt work: http://www.youtube.com/watch?v=EKfqmZVQSUo
[flash width=425 height=344]http://www.youtube.com/watch?v=4TK2YX0C0yI[/flash]
incase embed doesnt work: http://www.youtube.com/watch?v=4TK2YX0C0yI