The Nevis Range is good for intermediate to advanced boarders/skiers and there are a couple of slopes for beginners, though they can have poor cover as they are on the lower part of the mountain. Nevis has nice groomers, steeps, great off-piste and a decent park. I have had some of my best days snowboarding in the back corries (I have snowboarded extensively in Scotland, the Alps and Canada for 12yrs). Though being Scotland the weather can be very unpredictable. You can be skiing/boarding on ice with rain/gales lashing your face, then the next day you will have sunshine with 30cm of powder. To get it right you need to study the weather forecast and then with a bit of luck you will have a great day boarding/skiing.
Nevis Range also has some of the best views in Scotland. Time it right for amazing sunsets.
2009/10 has been an amazing season with tons of powder and blue bird days.
For apres-ski - the Clachaig Inn in Glencoe (25 miles south) has a great bar with regular live music, good food, guest beers and a massive whisky selection. It also has rooms to stay or there are 2 hostels less than a mile away.
In comment to an earlier poor review: This person is obviously a one week a year skier and not a purist of snowsports. This person should also remember that Scotland has one of the most unpredictable weather systems in the world, weather forecasts should be used as a guide. The sort of people who moan about breaking a finger nail should go abroad and leave it to people who genuinely enjoy the challenge, thrill and beautiful scenery of Scottish snowsports.
Scotland's ski areas are hugely valuable to the local snowsport community and long may they stay!

I hope that when people read these reviews, they realise that a person who has visited any ski area once can not give a realistic view on that ski area!