We got a bus from Singapore to Johor Bahru then an airport shuttle bus to the airport. Our flight wasn't until 6.20pm so we killed some time by having lunch, reading our books and eating awesome mini cookies from Famous Amos - you have to buy the cookies but the smells are free (they have a big sign outside that proudly offers 'Free Smells'!)
The Penang visit sounded great, if a little over-indulgent. I'm sure that Borneo won't disappoint. But please put in more photos, especially of Borneo! Dad/Pete.