"The Guest-Star Continuum" from The Brave and the Bold vol.3 #6 (DC, 2007) by Mark Waid, George Perez and Scott Koblish
Skipping right over the forgettable 90s B&B mini-series, we get to a Waid/Perez revival in the late oughts. Instead of one-offs, the book's first year was dominated by a single arc through which various characters teamed up, often in a chain (A meets B, then in the next issue, B meets C, and so on). It was TOTALLY in the spirit of the original (and to some extent, the cartoon series of the same name), as discussed yesterday, with appearances by such varied characters as Supergirl, Lobo, the Legion, and the Boy Commandos. Great stuff. The series didn't do so well after Waid left, giving up the ghost at #35, by then limply written by boring old JMS.