For the revived Toonami, Cowboy Bebop and Fullmetal Alchemist: Brotherhood both show shades of this (with the former also being a favorite of [adult swim], coincidently), as they're currently the only two shows (besides the long-running Bleach) to have stayed on Toonami ever since it was revived back in 2012 (granted, Cowboy Bebop was taken off for a brief period, but it came right back when the block expanded). Also, when questioned on what their favorite show is, the crew answers with those two shows.
As of October 19th, Cowboy Bebop has been removed from the lineup due to the airing rights expiring, and has been replaced by the long awaited Ghost in the Shell: Stand Alone Complex. However, it still counts for this trope, as the crew has confirmed the possibility of Bebop returning, thanks to FUNimation rescuing the series. As for Fullmetal Alchemist Brotherhood, it's still lingering around as of this edit, no doubt thanks to its length of 64 episodes (it doesn't help that it's no longer airing two episodes a night like it was when the block expanded to six hours).
Toonami briefly aired on Kids' WB!, though it never left Cartoon Network during that time.
Colbert Bump: Most music featured on the block has a huge surge in popularity afterwards. This is doubly true for original run composer Joe Boyd Vigil, who is almost unknown outside of Toonami fan circles, and DJ Clarknova, AKA Jason DeMarco, who pretty much is unknown outside of Toonami fan circles.
I Knew It: When Cartoon Network announced the return of Cartoon Planet, some fans speculated that this would lead to Toonami returning as part of the network returning to its roots for its 20th anniversary. Of course just a day after Cartoon Planet premiered, on the night of March 31-April 1 2012...
One of Us: Steve Blum's definitely a member of the Toonami Faithful.
Screwed by the Network: Toonami aired every weekday for years before being moved to Saturdays only, and the block's time slot was cut in half; its schedule eventually consisted of reruns, filler, and Naruto; it was replaced by the network's new darling Miguzi the week following its move to Saturdays-only...the list goes on and on. Long story short, it was canceled by Cartoon Network, which was supposedly due to bad ratings, despite the fact they were the ones causing them. Then, it was un-screwed when the fandom made enough noise.
Even on the new Toonami, unfortunately, the shows themselves still aren't immune to this. So far, Ghost in the Shell: Stand Alone Complex was removed partway through its run and replaced with InuYasha (though since the removal of Cowboy Bebop, it has returned), Tenchi Muyo GXP was moved down to 3:00 AM, and ThunderCats and Sym-Bionic Titan, the former of which pulled in as many ratings as Bleach and Naruto when airing in the right timeslot, were also unceremoniously removed the former being taken off partway through its second run (to be fair, though, it was because the airings rights were unexpectedly expired, and Sym-Bionic Titan has been confirmed to return).
Star Wars: The Clone Wars will be hit with this on January 4th, being moved down to 5:00 AM and replacing one episode of InuYasha to make way for 3:00 AM reruns of the original Naruto (keep in mind, Naruto was originally stated to have officially left on November 30th). This is despite the show doing surprisingly well at 3:00 AM.
Sleeper Hit: Toonami is darn famous for them. As detailed elsewhere, anime series that didn't do well in their original Japanese run and that were simply picked up due to having low asking prices for TV airing ended up becoming quite popular in their Toonami incarnations. The best examples of this are Outlaw Star, The Big O and, most recently, Deadman Wonderland. Deadman deserves special mention, both because by the second episode its ratings rivaled those of Bleach and because the show tanked in its home country so badly that ratings data is simply not available for it.
Talking to Himself: Steve Blum voices both TOM 3.5 and TOM 4 when they chat with each other.
Trolling Creator: Quite a bit. Whether it's their send-off to Deadman Wonderland, their responses to negativity on the Tumblr, or Jason DeMarco re-tweeting "Toonami Sucks" tweets, the crew gets plenty of trolling on the fans.
Wiki Rule: The Toonami Wiki, which provides information on both the current and past Toonami (even the Kids' WB Toonami), shows that have aired, are currently airing, or will be airing in the future.
Glen Bartlett, the man who runs the Toonami Asia channel, has said that NAMI, the host of the channel, exists in the same universe as TOM and SARA, teasing at a possible meeting between the characters. However, the staff of Toonami Asia is different than the U.S. Toonami staff, meaning that Bartlett's statement holding water depends on whether or not Jason DeMarco and the rest of the crew agree with it (DeMarco himself stating that the U.S. Toonami staff are not involved with Toonami Asia doesn't help).