Not actual crossovers, or even with conventional characters, but this was one of two issues this week that had art that really caught my eye. The first one was Sorrentino's GA with its beautiful spreads and trippy imagery; the second was Kano's Swamp Thing #22, which had alright art overall ---- but in a few places, it was a little noteworthy.
First there's a panel with John Constantine, who's the spitting image of Gordon Ramsay. Complete with the frown lines on his forehead and everything!
Then there's a couple of pages that are more or less PG-13 versions of scenes you could find in any Crossed comic: