In reply to Submit to Gravity:
Hi there
Now I'm Glasgow based so maybe biased here but I'd probably start Edinburgh, come through to Glasgow then head up on public transport through Loch Lomond, Crianlarich, Glen Coe/Rannoch Moor (depending on bus or train), the Fort, etc onward to Skye. Bus goes via. Glen Shiel. Train goes to Mallaig + boat to Skye.
I'd say that gives you a good portion of western Scotland is about, though does leave out Aviemore, Gorms, etc.
Transport - Citylink go Glasgow - Portree all day every day.
The (train) West Highland Line runs Glasgow - Fort William - Mallaig (splitting in half at Tyndrum for Oban). The northward Sleeper service stops at Edinburgh at something like 5am, so could be an idea to take that and you'll be in Fort William by about mid day.
For short walks, where do you begin :o I guess there's many but Steall Falls is a big contender for great scenery for a short walk - provided you can get down to the road end.