Tonight, the Nathan Fillion vehicle Castle welcomed guest star Adam Baldwin, who also co-starred with Fillion on the quickly cancelled but still beloved Joss Whedon space western Firelfy. Back then, the two had an easy chemistry that often belied the contentious relationship between their characters. Clearly, the chemistry hasn't gone anywhere as the two spent the majority of the episode sparring. Here's the first scene from their reunion.

During the investigation of a murdered writer, Castle and Beckett find that there are fans and then there are FANS. The difference between them is that super-fans just may be obsessive enough to kill when the show doesn't go their way.

Tonight, more secrets about the murder of Beckett's mother start turning up as does the heat between this crime solving duo. All that unresolved sexual tension has to go somewhere. It's long overdue, but their kiss actually happened!

While examining the death of a magic shop owner, Castle and Beckett revisit their childhood as well as cliched themes à la The Prestige. However, secrets of the trade aren't the only ones being revealed during the investigation. Highlights inside.

The canceled miniseries may have been canceled due to family pressure. Also today: Glee will not be saluting Justin Bieber, your favorite shows have been renewed, and Wicked heads to the small screen. No, not that Wicked. Not really.

Castle gets to live out a secret fantasy as the actress playing his hit character Nikki Heat shadows and mimics Det. Beckett. Unfortunately, it's not long until her mannerisms get just a little too creepy for Beckett to handle.

This week Castle visits a Prohibition era bar in search for a secret stash of liquor that people would literally kill for. In the process, he meets a young billionaire he'd like to punch and serenades Beckett with Billy Joel.

Castle and Beckett become true believers while investigating the murder of an astrophysicist who seems to have died in space. Unfortunately, when they start digging a little too deep, it's not only their murder victim that gets an otherworldly visit.

This week on Castle, our hero had a handy gadget that helped him to solve the crime — the Windows Phone 7. A close-up of the phone reveals it's been heavily customized and he even uses Bing's voice-activated search function.

While investigating the murderer of a male stripper, Beckett and Castle interview Hans, the flaxen-haired beauty with a potentially German accent. His vanity and disdain for "artsy fartsy" acting are upsetting but it gets worse. He's from New Jersey.

While investigating what seemed to be an open and shut murder case, Castle and Beckett stumbled upon a treasure map. What followed sounds like a really bad joke literally involving a priest, a thief, an angry wife and a geriatric.

Tonight, Castle and Beckett's relationship developed an intriguing twist when the daughter of a murdered psychic confronts the detective about a mystery man in her future. Bonus: We get to find out Castle's real name!

Hell hath no fury like a sexy police detective scorned! In the season premiere, Castle becomes the prime suspect for Detective Beckett's murder investigation and the target of her anger after rejecting her at the beginning of summer.

Today at Gawker.TV, Dutch Comedy Central recreates South Park with real kids, how to become a TV extra, True Life looks at life with Neurofibromatosis, Kevin Eubanks' retires from The Tonight Show, and we dissect Castle's Late Night Wars episode.

Did it live up to the hype? No, but they did kill Tom Bergeron and got Fred Willard to play the Leno-type. They also worked in the greedy network executives and of course—the intern. More Inside.

It's true! Dirty, dirty f'ing. Also today: Remember Stephen Dorff? You're about to. A terrible remake sounds terrible. Plus news about all of your favorite TV shows, from Veronica Mars to that other one.