Just the few I use:

Pulling with FFF
#showtooltip
/cast Faerie Fire (Feral)
/startattack

My main tanking Macro. Since we're not rage starved at all, I combine this with Maul on raid bosses to keep ahead of those aggro hungry DPSr's. =P I don't macro a lot of my tanking abilities just out of personal preference. The other macros others have posted look great tho.

#showtooltip
/castsequence reset=6 Mangle (Bear)(Rank 5), Lacerate, Lacerate, Lacerate
/startattack

Swipe/Maul (this is a rage chewer on mobs that don't hit very hard and hence leave you rage starved, just FYI)
#showtooltip
/cast swipe (bear)
/cast maul
/startattack


Some seldom used but sometimes useful macros for initial aggro

If your worried about initial aggro in Heroics.
/castsequence [nostance, target=player] reset=target/combat Regrowth, Rejuvenation, Nature's Grasp, Dire Bear Form

Same as the above but without Regrowth
/castsequence [nostance, target=player] reset=target/combat Rejuvenation, Nature's Grasp, Dire Bear Form