Okay, I also got myself an rtl-sdr dongle and it rocks. However, just a tip.
If you ever think of connecting an external antenna – have a GOOD look at the PCB. Some dongles are missing ESD protection. Like the one I got myself from ebay.
If so, connecting a big external antenna will result in a dead dongle. The ESD Protection is BAV99, according to the reference schematics.
Thnkx for exception13 for drawing my attention to this issue.
You can get those for about 7 bucks for 100pcs at aliexpress with freeshipping.