I'm trying to spread the word, since I know of people who missed it the first two times.
Knit Picks is offering their Felici sock yarn in the Time Traveler colorway again. This is a limited edition so I have no idea how long it'll stay around this time. It has 6 of the 7 colors of the original Tom Baker (fourth Doctor Who) scarf. Let's see if I can snag a picture.
$5.49 for a 50 gram ball. It's listed under one time specials, so grab it while you can.