Look at Apple's e-mail interfaces for a fine counterpoint. Even their iCloud web client, while kludgey in some respects, is a sight for sore eyes after using Gmail. They use different shades and textures to bring my focus squarely to the most important elements - the e-mail list and the e-mail/draft in focus. They even let you hide the inbox/draft/sent menu for an even more focused view. The Calendar is a similar story - focused and crystal clear where Google's product is a jumble.

I hope Apple stays competitive/serious about iCloud - they clearly have a few things to teach Google (and vice versa, of course).