Ways to "force" opponent(s) to attack you

[the Jester]

Immobilize/slow/restrain, too- the same principle as dazing, above.

If they can't really get to another pc and you're in their face, you are likely to be the target. If you remain adjacent to them, you can also make it pretty hard for them to use ranged or area attacks, too.

 

[Stalker0]

There are controller powers that causes the monster to attack a target of your choice.

 

[Mad Hamish]

A polearm fighter can make it so that to attack anyone but you they need to move, take an attack of opportunity and commonly end up prone...