I'm a huge fan of Chrome! I love how fast it is, and how it updates automatically. I also really love the extensions! The Dictionary one that you mentioned is one of my favourites, by far. I also really like LastPass for storing passwords, the Gmail checker Plus extension for keeping an eye on incoming mail, and the Evernote extension for clipping photos and web pages easily.

It's nice to hear from someone else who loves Chrome like I do!