IGN:
While technically two episodes, "The Final Page, Part 1" and "The Final Page, Part 2" were a connected two-parter that aired together, so we're reviewing them together!
How I Met Your Mother's "The Final Page, Part 1" kicked things off with a rousing game of jinx, in which Barney was silenced for pretty much the entire first half of the midseason finale. Meanwhile, Ted was confronted with a burning desire to visit his old architect professor (played by The OC's Peter Gallagher), who once told him that he would never become an architect.
I guess they're coming back next season because we never have found out the main thing....'How I Met Your Mother'...right?