http://www.iwantoneofthose.com/8MIGFL_adve.htm
This is as close as it gets to seeing what an astronaut sees as they look back at our lonely little planet from the vast emptiness of space. This has to be the ultimate combination of adrenaline rush and spiritual high, flying at Mach 2.5, 25 kilometres into the upper atmosphere (where you'll be above 99% of it, by the way), in a MiG-25 Foxbat with over 1000km of horizon before (or actually beneath) you.
It may not be cheap, but it's very clever. Your trip includes 2 nights in a luxury hotel in Moscow, VIP customs and immigration clearance, a custom made leather flight jacket, flight certificate, a photo with the jet and pilot on the runway, private English speaking guides, and an experience that will change you forever. Not bad for around £8k!
The event takes place outside Moscow in Russia (an experience in itself), and the price is a guide only and is subject to US$ currency fluctuations. The whole trip can be tailored to your requirements, and you can bring a partner or friend along with you, so you've got someone to whoop at when it's all over, for around £335.