There are a number of such products, the most popular are probably from Sonic Alert - http://www.sonicalert.com/Alarm-Clocks-s/1819.htm

I recently discovered Bellman & Symfon, a Swedish company that has some very attractive (naturally) products. Their vibratating/flashing alarm clocks integrate with wireless smoke detectors. I can easily get a stand-alone strobed smoke detector in just my bedroom, but that doesn't help if the other end of the apartment is in flames. http://www.bellman.com/en/our-solutions/fire-safety-solution...

Thanks for replying, burntwater!

thanks for the reply, I will try one of these out

This is the one that I have: http://www.headsetexperts.com/clarity_601_p/601.htm

I've had mine for years; I'm surprised they're still making it - I've gotten used to the 'cult of the new' lifestyle that seems so prevalent. :)