Recently saw Arctic Monkeys, setlist wasn't great but the actual performance was top. Lostprophets also quite recently, was mindblowingly good. The Prodigy, only caught the last 3 songs which, luckily, were Smack my Bitch Up, Take me to the hospital and Outer Space [remix]. They were mindblowing, however apparently at the front of the crowd it was just mayhem, someone broke their neck, someone snapped both their legs etc.
Oh, and Bloc Party quite recently, but I was high as a mother****er for it and just couldn't get into the heavier stuff.
Radiohead, just 30 minutes of them, and I was still high as for them, so that worked for me.
Muse a few years back, amazing. Seeing them again in November.
Edit: **** what I just said about Lostprophets being my favourite, saw The Game a few months back, that was easily the best gig I've ever seen before. Truly spectacular.