Yeah....high-powered laser pointers are AWESOME! Just don't point em in people's eyes!!!! (or at cars/planes....illegal). I have one that's 40 mW green. It kicks ass....people love it. On a dark night, you can see the entire beam and can actually point to stars in the sky. The light is visible 10+ miles away. It's also really sweet with some fog at a party....you can make sick planes of laser light that show the swirling of the fog....or you can use a bottle of water/glass/clear bottle to refract the light to make awesome light-shows.
Just to give reference to the power rating....your standard 'laser pointer' (the crappy red key-chain ones) are rated at about 1-5 mW and red light is 6X less visible than green light. If you want a REAL laser pointer, go on Ebay....and look for the green ones that are more than 5 mW. Mine was $40 with shipping....not bad for how incredible it is. Also, you can check out
www.wickedlasers.com be sure to check out the videos they have on there of the lasers lighting matches, popping balloons, melting trash bags and cutting through electrical tape....Ah-MAY-sing!! Mine can't do all that, but it's ridiculously bright and the beam is clearly visible in the dark.
Oh....for the record, anything above 5 mW is illegal to sell in the US, so you'll have to buy online.