Tag clouds are so much nicer than boring lists. If you have a 'Blogger' blog, here's two ways of doing it
The easy way as shown on the Frivous Motion blog post How To Make An Awesome Tag Cloud! - I recommend this one. It's very easy. You just copy and paste a few lines of code over your existing 'Label' widget. Even I could do it and you can see the results on the right!
The harder way as outlined in Phydeaux3's blog post Setup and configuration for New Blogger Tag Cloud / Label Cloud - yes the title says it all. A bit more technical! Enough to keep me looking for something easier. But apparently it works well too.