ForceUser
Explorer
They're pretty cool in 3.5, though they're clearly relegated to 2nd-rank status now. Just for fun, I've added a third combat style in my campaign: "mighty fighting" - Cleave at 2nd, Great Cleave at 6th, and Combat Brute (from Complete Warrior) at 11th. Also, rangers in my campaign can choose to forego combat styles altogether in favor of gaining wild shape as a druid (Small and Medium creatures only).