I am a really big fan of no-frills usability testing. Steve Krug is a pioneer in this space and I have a lot of respect for him.
I’ve had his first book “Don’t make me think” for a number of years, and have read it numerous times and I have enjoyed it immensely. I was very happy to find yesterday his second book titled: “Rocket Surgery Made Easy” has just been released. I ordered it straight away from The Book Depository (free worldwide shipping!) which is $30 cheaper than buying it locally. I can’t wait until it arrives so I can read it.
In the meantime I found a presentation Steve did in late 2008, which, whilst an hour long, is a great introduction into no-frills usability testing. I love how he doesn’t try to sell anything (actually the opposite, he gives away free PDFs), and shares everything he knows. Amazing stuff.