I'm gonna list some that aren't likely, but they are ones that I would go nuts over if actually played:
Hammerfall (I could list any song from their first two, so instead of just doing that, I'll list my favorite from that era):
When the Dragon Lies Bleeding
Way of the Warrior
Hammer of Justice
Kamelot (keep in mind their 'normal' set will still have me singing along to
every song:
Shadow of Uther
The Inquisitor (any clue if they've ever played this one live?)
Across the Highlands
Tyr:
The Edge
Land (the epic, holy shit I'd go crazy)
Hail to the Hammer (of course they're gonna play it, but it's fucking awesome)
Seventh Wonder:
Paradise
Waiting in the Wings
Not an Angel
Tarot:
Dark Star Burning
Traitor
I Walk Forever
Oceans of Sadness:
Mirror Palace
Between the Lines
Accepting Our Weakness
Accept:
Any of their fast-paced "thrash" songs
StormWarrior (and duh they're gonna play Heading Northe, and duh it's gonna be awesome
):
Óðinn's Warriors
Lindisfarne!
Ragnarok
Blackguard:
I do not know their songtitles by heart, but there are a few on the album that will have me thrashing pretty good.
Also, "This Round's On Me" will be fun, when they close their set.