You can add contacts shortcuts to the desktop screen (like speed dial).

Clicking the status thing at the top brings up a handy set of settings (profile, bluetooth, net connection, status on skype etc. and alarms).

You can turn off the auto word completion/capitalisation in the text input settings (love that, it annoys me lol).

More a hint than a gimmick, but I leave an arc across the bottom right of the desktop free so I can naturally flick through using my right thumb with one hand.