The Greatest American Hero crossing with Green Lantern & Green Arrow. Ollie Vs Bill Maxwell. The Old Timer comparing Hal (the Guardian's agent) with Ralph (another human agent of aliens). Pam and Dinah standing around waiting for the guys to start acting their ages.
Mr. Terrific becomes a Person of Interest in the chess game between The Machine and Samaritan.
Lex Luthor (Post-Crisis Byrne era) is one of those Red Reddington offers up to the FBI on The Blacklist. Ot of we can go a bit more creatibe- Luthor in the role of Reddinton and Lois as the "only person he will talk to" in a version that merges the two realities.
Dick Grayson and Illya Kuryakin
Dr. Mid-Nite and House, M.D.
Hill Street Blues, but in Gotham
The Spectre on the Highway to Heaven
Batman and Columbo vs. the League of Assassins, if only so I could hear the following dialogue:
Ra's al Ghul: Curse you, Detective....
Batman: Ra's.....
Ra's al Ghul: I wasn't talking to you, Batman.
This would be a cool setting to throw Travis Morgan into.
Is it weird that I'd love to see Blue & Gold on "The Love Boat?"
- Super Sons with Gon and Killua or Goten and Trunks (complete with Jon and Damian attempting the Fusion technique. Hell, maybe even succeeding xD)
- Superman and Superboy with All Might and Deku
- Deathstroke VS Scorpion
- Shazam with Ben 10
- Wonder Woman with Thor
- A Danganronpa Killing Game where the cast is made up of select members of DC's teen teams (Titans, Young Justice, Legion)
Roy Harper and Kim Possible
THE FANTASTIC JOURNEY TO THE CENTRE OF THE EARTH--The cast of THE FANTASTIC JOURNEY end up in Skartaris, where they meet Travis Morgan, the Warlord.
THE LAND OF THE LOST WAR THAT TIME FORGOT--The cast of THE LAND OF THE LOST meet the fighting men of the War that Time Forgot.
THE SWORD OF THE ATOM IN THE LAND OF THE GIANTS --Ray Palmer must battle for his own survival in THE LAND OF THE GIANTS.
SLIDERS BEYOND 3D--The original cast of SLIDERS and Superboy (Kon-El) go sliding through the DC Multiverse (in 3D).
RIP HUNTER, TIME TUNNEL MASTER--Rip joins Dr. Doug Phillips and Dr. Tony Newman in their travels through THE TIME TUNNEL.
TERRIFIC, NICE, GREATEST AND ‘MAZING--Mr. Terrific (Steven Strimple), Captain Nice (William Daniels), the Greatest American Hero (William Katt) and ‘Mazing Man (Sigfried Horatio Hunch III) form their own neighbourhood watch.