Just be thankful the Nokia rep bothered to show up and demo it for you, I work in a Leeds CPW and we haven't even had the phone in yet. When I get mine tomorrow, it will be the first time i've even held one (Im putting alot of faith into Nokia here, which after the whole N-series fiasco of the last few years, I never thought I'd do!)

I think the main thing about the N900 is the possibilities it creates. You won't 'get it' right now, but in 6-12 months, when Maemo is flourishing with devs who know the device better, you'll see some truly amazing stuff.