My best table top moment actually spawned one of my just for fun/wild card tactics and created something of a standing character in my IG army. It was a battle vs some Chaos Marines. The other guy had moved his rhino was behind cover and his Chaos Lord had disembarked the turn before. So he sends this thing roaring right into my line of fire, then moves his jump pack equipped Chaos Lord behind the Rhino using it as cover to get into melee with(presumably) my command squad and the guardsmen it was supporting, while the rest of his army advances. This obviously would have been very BAD. But due to the positioning of his Rhino and CL the only units I could move to shoot at him at all was my single armored  Sentinel(comprising my army's entire 'fast attack' force at that time). So I figure 'why not' and move the Sentinel into position and take a shot at the CL. I score a hit and a wound, I guess this is the point I should mention that the Sentinel is armed with a Lascannon.....and the best part is the Sentinel pilot was nowhere near done for the day. Over the course of the rest of the battle he managed to disable the rhino as it tried to pull back, take out a possessed marine with another Lascannon shot, and one of the chaos marines holding the other guy's strategic point with a hunter-killer missile in the last round(helping to kill the squad that marine was a part of)....needless to say he was given a promotion, and some kill markers.<br/><br/><br/><br/>As far as Dawn of War goes. The best moment was a 3 on 3 game where each team had a chaos marine player (I was one of them). And at one point we have my chaos marines, my ally's eldar, and some space marines going full bore against the other chaos marines, the tau, and another eldar. And in the center of the battle my bloodthirster is slugging it out with the other chaos marine's and one of the eldar have their fire prisms firing on one of the bloodthirsters. And the timing was just right so that for a good minute or so the fire prism blasts would go off right as the bloodthirsters hit one another so it looked like it was them causing the blasts. It was only after watching the replay that I realized it had been the fire prism.