One of the 5th level walord dailies - Stand the Fallen - is good, especially if you're the party's only leader - close burst 10 healing that includes you, that's pretty nice. The other two suck pretty hard, one grants a save - yippee, Sacred frick'n Flame does that, and Shake it Off does it better - the other basicly does nothing. That's Villain's 'Nightmare' (more propperly Villain's Infrequent Slight Annoyance) - it lets you cancel the adjacent target's 'walk' or 'run' action as an immediate interrupt. It doesn't stop the enemy from shifting, so he can just shift, then move. He's probably going to do that, anyway, since he doesn't want to draw the OA for moving, in the first place. And 'walk' and 'run' are pretty specific, so, for instance, any power that combines movement with an attack (and lots of skirmishers have such powers) isn't affected, teleportation isn't stopped, etc.
But, no, you can't take the same daily (like, oh, Lead the Attack) twice. You can take a 1st level daily instead of a 5th, but unless you're in a party with two clerics who both have Beacon of Hope, Stand the Fallen is probably better than whatever your second choice for a level 1 daily would be.