The best selling motorcycles this year have been the iconic Triumph Bonneville T100, and BMW's dual purpose off-road/on-road GS and BMW's six-cylinder GLT. Get a side-by-side comparison of the 2011 BMW F 650 GS and the 2011 Triumph Bonneville T100 here.
Triumph's Tiger Explorer provides an exciting off-road/on-road motorcycle, which may be surpassed by a new touring bike that fits in the line up between a BMW R1200RT and the K1600GT.
On the showroom floor, you can find the Thruxton 900:
The Thruxton 900 was named after the Thruxton Racing Circuit where Triumph won the first three places in the 1969 Thruxton 500, a 500 mile endurance race held near Andover in Hampshire, United Kingdom. This was during the "Cafe Racer" era of modified motorcycles. The Triumph Thruxton has been around for quite some time. Here is Sucker Punch Sally's modified Triumph, for instance.
You can also find the Bonneville T100, the Speedmaster, and the Thunderbird:
If all this seems too much, consider starting with a Vespa:
The Vespa is a 'twist the grip to go' type of scooter, with hand brakes for slowing and stopping. You'll get a feel for what it's like to ride a motorcycle, minus shifting gears, and, if you find you're comfortable with it, you may then want to get a motorcycle for longer rides.