Considering how the sorcerer's various tactics revolve around his opponents never getting a turn
Hence my earlier comparison to Pun-Pun. It's a build that relies on some pretty sketchy interpretations of the rules, particularly how stealth works. Without the sketchy interpretations to exploit, it wasn't anything special, and the battle largely came down to who chose the best spell to cast, given the evolving situation (which is how it's supposed to work).
There are plenty of legitimately powerful exploits, like a Bard or Sorc 2-dipping Warlock to have a punishing at-will attack combined with a large reserve of typical spells, Force Cage shenanigans, and the ol' "stack buffs on the Barbarian, throw him in a room, and run away" maneuver, but these are, for the most part, pretty straightforward and do not make anyone feel particularly clever.
BTW, I ban 2-dipping Warlock at my table. Just how it is.