Before Quantum Leap, there was a another scifi tv show where two time traveling Voyagers tried to put right what once went wrong….. [more inside]
More diversity in sci-fi webcomix? Yes please: Athena Wheatley, or Warp & Weft features a black female scientist from the 19th century time-travelling to 9283. Fun, and looks good: Moebius meets Futurama meets Adventure Time (and sexy too! occasionaly cartoonishly NSFW)
Timelines: Time Travel in Popular Film and TV is a beautiful visualization of that most favored science fiction gimmick. For a more thorough, but less pretty, view of science fiction that messes with history, there is a chronology of when 1,800 different alternate history stories deviate from our own time line. Also, a brief look at the logic of time travel in science fiction, and how it should work.
Rules for Time Travelers [Spoiler? alert.]
A Guide to Science Fiction Chronophysics, a serious look at some of the hard questions ignored in soft-science fiction and fantasy. While we wish some time lines had never come to pass, or would go back in time and shake hands with themselves, there are circumstances that can lend themselves to great deal of fun.