So when LAist agreed to review the Swamp Thing DVD that was released on Tuesday, we thought we were going to review an old-school, cheesy, black-and-white B movie. But we were wrong. What we got was 25, half-hour episodes of a not-that-old school, cheesy, colorized B TV series. And we immediately thought two things: >> They had three seasons of this show? >> We can't believe that this comic book spinoff about a “humanoid mass......