Here is another alternative to the normal defensive classes, a blend of Striker, Defender and Controller.  Good for controlling single targets or just dolling out some damage to enemies surrounding him.

System: DnD 4.0
Class: Hybrid Fighter and Barbarian
Level of Build: 8
Books Required: Players Handbook 1 & 2, Martial Power 1 & 2
Build Requirement: Class Feature – Brawler Style (Hybrid), Power – Blood Bear Rage, Item – Feral Hide Armor
Example Character Sheet: Melgaroth the Big

Overall, the intention is to grab the strongest looking enemy, pull him out of the crowd or away from your allies, then beat the ever living mercy out of them.  Find something strong enough to take down, you just start up the Blood Bear Rage and just wear the creature you have down.  Why not mark it as a fighter while your at it so it has to hit you out of everyone anyway.

A not required but highly suggested option of this build is to use the Feral Hide Armor, it is found in Dragon Magazine Issue 369.  It grants you Claws as weapons with +3 Proficiency and 1d8 damage.  Use it like a Spiked Gauntlet in your off-hand slot so you can easily switch between the Barbarian two-weapon attacks and the Fighter grapple attacks.  If you don’t have access, then just go for a Spiked Gauntlet.

Feat wise, Inescapable Hold and the item Wrestler’s Gloves make a nice combination.  For this character, any attempted escape is against Fortitude and all items told they have to target a 26.  That and his AC make it a decent struggle against time as to which will down the other first.  An aspect that is taken in great delight by him.