Here's another Jet Star 2:
[youtube]http://www.youtube.com/watch?v=L4kq6e9N064[/youtube]
Essentially the same ride. If you think it looks a bit slow, shakey and dull - it#s because it was
Space Invader is a Zierer 4-man bob coaster.
There aren't many about, and the other one in the UK (other than Blackpool's) is a bit of a whore. It went from Trentham Gardens, to Alton, to Pleasure Island, to Flamingoland, to Groveland and is currently being built in Loudon castle.
Piccies here:
http://www.rcdb.com/ig821.htm?picture=1
http://www.rcdb.com/ig1873.htm?picture=1
I can't find a POV, but it's not much. Though the 4-man bob was my favourite ride at Alton for ages, and I always had a soft spot for Space Invader.