Ted as a college professor? You have to watch this clip from the How I Met Your Mother season premiere.
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In this clip from the the upcoming episode of How I Met Your Mother, Robin and Ted are driving each other nuts as roommates. They think maybe have sex will solve the problem... much like Barney thinks it will solve world peace.
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A preview clip of Speidi (Spencer Pratt and Heidi Montag) appearing on How I Met Your Mother on the magazine cover of "Them Weekly" that Marshall takes home to read while in the bathroom.
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In this scene from "Little Minnesota," Ted thinks his sister slept with Barney and he decides to confront her on it. A great reaction from both her and Barney.
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HIMYM Quotes

Barney: Ladies and gentlemen, I have in my hand a copy of tonight's Top Ten list. The category: top ten things I would've called my truck...
Ted: It was never your truck.
Barney: if Ted hadn't been a jerk and given it back.
Ted: It was a rental.
Barney: Number ten, "The Winne-Bango." Number nine, "The Pick-Up Truck." Number eight, "The Ford Explore Her." Number seven, "The You Scream Truck." You Scream. (they all laugh) Number six, "Feels on Wheels!" Hello! Number five, "The Ride Her Truck." Number four, "The 18-Squeeler." Number three, "The Esca-Laid." Number two, "The Slam-Boney." and... the number one thing I would've called my truck if Ted hadn't been a jerk and given it back... "The '69 Chevy."

Sometimes things have to fall apart to make way for better things...we're done here.

Ted