A few months back a good friend & I spent a rainy Saturday listening to the Steven Wilson remixes of King Crimson's early albums on his kick-ass stereo. Lizard was always my favorite (even Fripp refers to us Lizard fans as strange), and the remix really pulls the passionate playing out of the original, somwhat muddy, mix. And crank up the Lark's Tongues in Aspic.
If you’ve seen them recently, I think it is the songs from Lizard that have improved most dramatically when played live. This band is much more competent technically than that band was. I also think there’s a bit of an added bonus in that Lizard was not as overplayed by most Crimson fans (well, other than by you strange Lizard fans) so it seemed more like new material. Circus in particular just comes off really well.