Interestingly enough there have been several post war civilian B-25 launches from aircraft carriers. The first of which was in 1992 to commemorate the 50th anniversary of The Doolittle Raid.
1. 1992 - B-25J 44-29199 "In The Mood," B-25J 44-30748 "Heavenly Body," CV61 USS Ranger, off of NAS North Island, CA for the 50th anniversary of WWII
2. 1995 - B-25J 44-29199 "In The Mood," B-25J 43-28204 "Pacific Priness," B-25J 44-30606 "Tootsie," CVN70 USS Carl Vinson, off of NAS Alameda, CA for Fleet Week celebrations in conjunction with the 50th anniversary of VJ Day
3. 1995 - B-25J 44-29199 "In The Mood," B-25J 43-28204 "Pacific Priness," TB-25N 44-30832 "Take Off Time," CVN70 USS Carl Vinson, off of Pearl Harbor, HI for 50th anniversary of VJ Day
4. 2000 - B-25J 44-29199 "In The Mood," B-25J 43-28204 "Pacific Priness," B-25J 44-86747 "Mitch The Witch," B-25J 44-30423 "Photo Fanny," CV16 USS Lexington, Corpus Christi, TX for filming of the movie "Pearl Harbor"
5. 2000 - B-25J 44-29199 "In The Mood," B-25J 43-28204 "Pacific Priness," B-25J 44-86747 "Mitch The Witch," B-25J 44-30423 "Photo Fanny," CV64 USS Constellation for filming of the movie "Pearl Harbor"
I think Bill Klaers and Alan Wojciak have the record of piloting the most amount of B-25s from aircraft carriers at 5 launches for each of them at the controls of B-25J 44-29199.
An interesting previous thread regarding the VJ Day launches.
http://warbirdinformationexchange.org/phpBB3/viewtopic.php?f=3&t=21725&start=15&hilit=carl+vinsonRyan