I'm currently not in urgent need for one of these (in other words: I'm single) but if I wasn't this might be a really cool thing to try: The Love Mattress
How many times haven't you gone to bed tucked up close to someone warm and soft and then your arm painfully falls asleep before you do? Many! I say. This invention makes it possible to wrap your arm around and under someone without this person having to feel like sleeping on a exhaust pipe across the shoulders or neck.
I guess the only criticism against this invention is that sleeping in a snuggled up position is only a very small part of the whole sleeping (or "jumping") experience a bed attempts to make as comfortable as possible.
Anyhow, I like the cuteness of the idea enough to blog about it.