I was rooting for Broadway veteran (and all-around lighting design big shot) Ken Billington and Sunday in the Park with George to receive a Tony for Lighting Design because the lighting is so dang impressive, eliciting gasps from audience members from the very beginning. Not merely a technical feat, the creative lighting is like a character in the musical—very fitting, considering the extreme importance of light for the artists (George Seurat included) who are the musical's central characters.
As you might already know, Sunday in the Park will end its run on June 29, 2008. The production itself is very good, marrying Stephen Sondheim's trademark intelligence to strong performances from the likes of Daniel Evans, Jenna Russell, and good ol' Michael Cumpsty.
Discounted tickets (including rush tickets) have been available for a while, but go for centrally located seats and certainly be wary of upper-level seats on audience right. The sound of the musicians, who sit in a balcony on audience right, can be overwhelming in that zone, so in this case (having learned from Myra's advice) I'd recommend seats toward the back, not the front, of the section.
As of yesterday on Talkin' Broadway, the General Rush ticket policy is as follows:
Subject to availability, a limited number of tickets are sold at the box office, when it opens, on the day of the performance. The tickets are $26.25 each and 2 tickets are sold per person. The seats are usually located in the rear mezzanine.