Until you have more than 10 points in your delayed damage pool, Stone Power will pretty much let you ignore up to 10 points of damage a round, which is perfect for tanking.
Extra Granted Maneuver will give you your best maneuvers 1 round quicker (Stone Bones, Crusader's Strike at first level), so if you can fit it in, get it.
If you're wanting to concentrate on the whole "making yourself a target" part of being a tank, Combat Reflexes is a must. Combine it with a reach weapon such as a Glaive, maneuvers/stances such as Defensive Rebuke and Iron Guard's Glare, and you can't go wrong (having a party member to cast Enlarge Person on you helps).
Once you have Thicket of Blades as an option, consider the feat Stand Still (from the SRD) - this will literally let you stop any person within your threatened space physcially moving, for the cost of an average roll and an AoO - however I don't think the feat is much use below 5th or so level, as at that point d10+8 damage can likely kill any mook that you'll be AoOing. Add Mageslayer (from Complete Arcane) to the mix to do a similar thing for casters.
What I would personally suggest for a feat progression for a Human Crusader is:
H: Combat Reflexes
1: Stone Power
3: Extra Granted Maneuver
6: Stand Still
9: Mage Slayer
12: Robilar's Gambit
15: Defensive Sweep
Other feats (may or may not be) worth throwing in are Supernatural Opportunist (ToM), Overwhelming Assault (PHBII), Pursue (ECS) and Deft Opportunist (MiniHB/CAdv).
The Tripping build posted before isn't a bad way to go either, but when you start facing foes much bigger than you, you'd wish you had Stand Still instead.
Another couple of ideas I've had about builds like this would be the feats Sidestep (MiniHB), and/or Double Hit (MiniHB) and TWF. Not sure how good it would be tho.
Glaive/Spiked Armour is definately the best way to go...no need to spend a feat on an EWP that way. Plus, you get to enchant your armour spikes with Warning and Eager and such, which replaces the need for Improved Initiative (though it's always a good addition).