It have to disagree with a few of "Anonymous's" points, I have had my 2008 650GS for just under 12 months now and it is a great bike. I ride up to Edinburgh from London regularly and the seat is quite comfortable for 7hours of straight riding, the engine is more than capable for cruising at 70-80mph whilst returning over 60mpg. That's over 200miles from a 16 litre tank!
As for the Indicators, well this is an age old topic, but I for one think BMW's indicator setup is much better than that on other bikes. (Left button for Left, Right button for Right, what's so hard about that?) Yes it takes a little getting used too but after a few miles it becomes second nature to use. It's such a shame to see BMW cave and remove it from their new K-series range.
Yes the fuel gauge costs extra, but it's only £100 and that includes a gear indicator and all manner of other digital info.
It is expensive to fully pimp the bike out yes, but for me even the standard bike had a higher quality feel to it, even down to the handle-bar rubber and plastics used on the switches.
All in all a fantastic commuter/mini touring bike for newer riders and to keep for a good while after. A solid 4 stars.