Here is a pretty interesting history: http://www.intellivisionlives.com/bluesky/home.shtml
Actually, so much is classic on that page I had to read the whole thing twice. Highlights:
- branding hair dryers with Intellivision logo
- Pong selling out in 1975
- "classic woodgrain" Intellivision
- long-promised, barely-delivered (see below) computer keyboard
- BurgerTime quote used by disgruntled programmers
- system-changer allowed you to use 2600 cartridges
Also a real fun read: http://www.intellivisionlives.com/bluesky/hardware/index.html
- I love: "also marketed through Radio Shack as the Tandyvision One" like, of course Radio Shack had to have their crappy version with crappier styling and some dumb Tandy-derived name...
- "only 4,000 Keyboard Components were made; all sold were recalled for full refund; owners who wanted to keep theirs had to sign waiver absolving Mattel of all future support for the component " I love it...