If you like driving tanks, try battlefield 3. the best online shooter out there
Tanks as well as various IFV's (some amphibious), mobile AA, jeeps/humvees, helicopters, jets, and boats. Plus you can ride gunner in many of those. You can hop out and repair if you take damage while a teammate covers you and of course you can blow them up with various rockets (including laser guided ones on targets designated by teammates) or C4. Keep your squad supplied with ammo and revive fallen comrades. Lay down suppressing fire with a LMG, kill your enemies at a distance with a sniper rifle or get personal with a shotty (both dedicated and underslung on your assault rifle.)
Can't kill an enemy because he's hiding in a building? Kill the building. That wall blocking your view of the objective? Blow it up.
Join us on the Battlefield!
Coming in the fall is an entire expansion dedicated to armored warfare.