Here are a few web sites with fan-published Star Trek comics and enhanced versions of published Star Trek comics. There are some very strange and talented Trekkies out there.
Australian cartoonist John Cook's online comic strips spoofing Star Trek.
Star Trek The Animated Series Comics
TAS episode "Yesteryear" by D. C. Fontana reformatted as an online comic from screen captures, and and an ongoing series of online ST:TAS comics by Charles Kelso, Kail Tescar, Raul Quiles Jr. and others. These online comics are created with TAS screen captures and original art.
Mad Magazine's Star Blecch
Colorized version of the first Mad parody.
Farside-style Star Trek cartoon by Curt Danhauser
Red-shirt enthusiasts will find this cartoon amusing.
The lost mission of Zolon
Star Trek parody about engine maintenance and warp core breaches published in PS: The Preventive Maintenance Monthly #593 Apr 2002
The Final Leap
Quantum Leap meets Enterprise in a comic-style photostory.
Passage to Moauv
Audio and scans of the Star Trek comic and record. This page may only be temporarily online.