Countdown Vol 1 50

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"Last Laugh"
	Writers Paul Dini; Jimmy Palmiotti; Justin Gray Pencilers Jim Calafiore Inkers Mark McKenna Colourists Tom S. Chu Letterers Pat Brosseau Editors Jeanine Schaefer; Mike Marts

Appearing in "Last Laugh"

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This issue reveals that Jimmy Olsen is aware of the secret identities of both the Red Hood and Nightwing. Given Jimmy's inquisitive nature, it is fair to assume that he is aware, or at the very least suspects, that Bruce Wayne is Batman.

This issue contains an ad for an upcoming Countdown issue. The ad is a close up of Red Robin wearing a button that reads, "I Found Ray Palmer".

In his cell, the Joker remarks, "Nurse Ratchett won't let me watch the World Series". This is a reference to the 1975 film, One Flew Over the Cuckoo's Nest, which took place at a mental health facility. One of the supporting cast members, Nurse Ratchett, refused to allow inmate R.P. McMurphy (played by Jack Nicholson) to watch the World Series.

In the Keystone City scene, Heat Wave remarks, "You both flip-flop more than a Massachusetts senator". His remark is in reference to United States senator John Kerry who ran against President George W. Bush in the 2004 Presidential election. Kerry's opponents often accused him of "flip-flopping" with regards to his voting record in the Senate.