I have a tie for fav. this year.
Audioslave - 3rd row inside walk way and the stage came out so the point I was at was actually front row in front of Chris Cornell and Tom Morello. Played for 2 hours, 3 Rage Against the Machine songs, 4 Soundgarden songs, then probably 16 songs split between their first two albums and awesome new song called "sound of a gun". Great set very energetic and good sounding, amazing to see Morello play he is truely a guitar god. Seather and 30 seconds to Mars opend, Seather was pretty good and I didn't care much for 30 seconds to Mars.
Tom Petty & the Heartbreakers - Lawn area, raining on and off only clouds in the air with lightning in the background (our own light show), around 15 songs in electricity went out during "refuge" everyone kept singing electricity sprung back on and the band didn't miss a note. Then two songs later during I believe "don't come around here no more" electricity went out again everyone kept singing and dancing in the rain for the new 2 minutes or so the bad stood there with smiles on their face when the lights came back on and finished the song and ended the show early because of the danger coming. Just amazing. The Black Crowes opend and they were very good I'm also a huge fan of theirs "soul singing" was the highlight.
Also saw Santana and the Steve Miller Band this summer Santana was good but I didn't know much of his stuff except for his hits and Steve Miller really dissapointed was the worst concert I have ever seen and I really enjoy their music.
Here's a list of other concerts I've seen.
Summer Sanatarium - Metallica, Linkin Park, Limp Bizkit, Mudvayne, and someother band. Was 2nd row for Metallica around 8th row or so for others at the Silverdome sold out 80,000 people great show Metallica did 3 or 4 encores very amazing was worn out by the end of the night each Metallica, LP, and Lb played 2 hour + sets
Guns N' Roses (2002) - Great show around row 25 Axl still sounded real good they played 18 classics and like 3 new songs which were also very good.
Aerosmith - Seen them 3 times always put on a good show. openers Kiss (not a fan), Run DMC (last show they ever played few days before one dude died), Cheap Trick (twice put on a good show).
Lollapalooza - Audioslave (first tour great show), Incubus (always a good show), Queens of the Stone Age (good show), Jane's Addiction (closing band over half the crowd left after Audioslave and so did we who cares about Jane's Addiction).
Incubus - 4 hour set one of the openers didn't make it so they made up for it great set a lot of energy.
3 doors down & Nickelback - 3 Doors Down rocked this was right when Kryptonite was getting hot, Nickelback put on a good show this was right before they turned pop and put out Silverside Up (they signed autographs in the back which was really cool because "how you remind me" was #1 on the charts the next week.
Eddie Money - Small gig pretty fun show, played the few goods that I knew.
Anger Management Tour - Sadly I went to this a buddy had free tickets figured we might as well go. I must say rap concerts suck. Eminem, Xzibit, Ludacris, Xecutioners, a few others didn't really care.
I've seen a few others I'm sure but I don't quite remember