Marvel has announced that Edward James Olmos, who starred as Admiral William Adama in Ronald D. Moore and David Eick’s re-imagining of Battlestar Galactica, has joined the cast of Agents Of S.H.I.E.L.D. in a recurring role.

Olmos will debut on the show this spring, playing the role of Robert Gonzales, who’s described as someone who will have “massive repercussions for Director Coulson and his team.”

OK, so it should come as no surprise that unexpected actors are being announced for the cast of the upcoming sequel, Machete Kills. Director Robert Rodriguez is known for putting together sometimes strange and always intriguing casts, and it always seems to work out quite well. The very same is expected here.

In the same way that he’s announced other casting news, such as Charlie Sheen playing the President of the United States, Rodriguez took to the Twitter to announce that pop music star Lady Gaga will also have a part in the sequel.

Gaga will play someone named La Chameleon, which is assumed to be a small role as the performer has apparently already filmed her scenes. Along with the announcement, Rodriguez also released a poster of Gaga in character. You can check that out below.

If the addition of a one Mel Gibson wasn’t intriguing enough for you, director Robert Rodriguez has announced that he has also cast tabloid magnet Charlie Sheen in his upcoming sequel, Machete Kills.

Rodriguez made the announcement via the Twitter, where he also revealed that Sheen would actually be playing the President of the United States of America (which feels strangely fitting, no?).

This is one of those surreal moments in life, the likes of which no geek wants to experience.

While writing up a short piece for the the awesome first trailer for Syfy’s Battlestar Galactica prequel, Battlestar Galactica: Blood & Chrome, I went to find out when this exciting new series was going to finally premiere. The answer I found was: never. It’s being reported that Syfy has decided NOT to move forward with the show after years of development.

As it turns out, the “trailer” was just a demo reel set to Trent Reznor and Karen O’s “Immigrant Song” cover from The Girl with the Dragon Tattoo that was shown at WonderCon. Syfy apparently thought it over for a long time, but ultimately decided it was not in their best interest (who cares what the fans want, right?) to continue forward with the property as a series. This might not, however, mean that we’ll never see Blood & Chrome.

You can read why there’s still some hope to see this and check out the fast-paced first “trailer” by clicking on over to the other side now.

Showtime’s Dexter had a killer showing today at San Diego Comic-Con 2011. Ralph Garman introduced the panel, which included Michael C. Hall (as the titular Dark Defender), C.S. Lee (Forensic specialist Masuka), David Zayas (Detective Angel Batista), James Remar (who plays the ghost of Dexter’s dad, Harry Morgan), and this year’s guest star Colin Hanks (who plays newcomer Travis Marshall), along with executive producers John Goldwyn, Sara Colleton, Scott Buck, and Manny Coto.

The panel began with a preview of an upcoming Dexter-themed Facebook game, created by street artist/designer Marc Ecko. Then they played an exclusive preview of the season 6 trailer [watch it here below] featuring guest stars Colin Hanks and Edward James Olmos. There were loads of religious overtones to this year’s killings, and was set to Depeche Mode’s “Personal Jesus.”