Currently for different projects I'm switching between Eclipse and IntelliJ Idea. There are some features I love in Idea and miss them very much in Eclipse. Let's make Eclipse more like IntelliJ Idea :-)
Open Windows -> Preferences, navigate to General -> Keys, look for "comment" and change all current mappings of Shift+Ctrl+C to Ctrl+/.
Some time ago I made a video how to make Eclipse Content Assist automatically pop-up. It's not as good as IntelliJ's, but it's better than nothing: http://www.javavids.com/video/eclipse-content-assist-without-ctrl-space.html.
I got used to automatic save soo much, now it's a must in Eclipse. There are two plugins: "eclatosa" and "Smart Save", I installed eclatosa and I'm quite happy: https://marketplace.eclipse.org/search/site/autosave
Also some time ago I made a video how to do that. Currently I'm using Ubuntu and Eclipse Moonrise UI looks very nice: https://marketplace.eclipse.org/content/eclipse-moonrise-ui-theme
In Idea you can increase / decrease font size using CTRL + mouse wheel. In Eclipse there's no such thing, but there's a plugin saneclipse, which performs it using CTRL + + and CTRL + -: http://saneclipse.vogella.com/download.html. It also has very useful fullscreen mode (activated using CTRL + ALT + M)
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