You heard it here first

"Scrubs" star Sarah Chalke will return to "How I Met Your Mother" for "multiple episodes" at the "beginning of the season," according to CBS's top programmer.

Which is fantastic news.

But, according to CBS Entertainment president Nina Tassler, "Right now, I don't think she's the mother."

Awwwww.

Chalke has been a fantastic addition to the show as Ted's (Josh Radnor) new girlfriend, Stella. And there seemed to be clues that Stella would indeed be the as-yet unnamed wife and "Mother" of Ted's future children.

"I have no idea what's going to happen with that," Chalke said. "I had a great time doing it."

Certainly, the fact that "Scrubs" — which moves from NBC to ABC this season — will complete its episodes by the end of the summer will make it easier for Chalke to show up on that other show.

"They don't want me to say it, but she's the mom," said "Scrubs" creator/executive producer Bill Lawrence. "Write it. Heard it here first."

Chalke could end up on "How I Met Your Mother" on a more permanent basis. Or she could end up on the possible "Scrubs" spinoff that might debut in 2010 after Zach Braff (who plays J.D.) exits the series.

Braff said he's open to occasionally returning to whatever "Scrubs" becomes if it continues.

"I suppose I should have come up with better answers for this before I got on a panel in front of all you guys," he said. "Bill (Lawrence) and I haven't even really talked about it too much.

"The sense is that we thought we were ending, and then thanks to (ABC), this has been a bonus, amazing year. We're having a blast doing this. My sense is this is my last year. If the show does continue like ... an 'ER' kind of thing, I would love to come back and visit and definitely direct some and do craft service if they need some help."

When (if?) "Scrubs" ever ends, we will finally find out what the janitor's (Neil Flynn) name is?

"I can tell you my name right now. It's Zanzibar Buck-Buck McFate," Flynn said. "There. End of mystery."

Lawrence, however, disagreed. "When you hear the janitor's name, it means the show is over. That's just the thing I've always told all these guys," Lawrence said. "And so when it's out there, it means we're done."

"Zanzibar Buck-Buck McFate," Flynn insisted.

Neil flynn doesn't see Turk (Donald Faison) continuing without J.D.