The button below will generate a random phrase consisting of four common words. According to this xkcd strip, such phrases are hard to guess (even by brute force) but easy to remember, making them interesting password choices.
This generator uses true random numbers from random.org. The word list it uses is a merge of the Electronic Freedom Foundation (EFF) and Beale diceware word lists (minus the special character and number filler words in the Beale list). I also added a few fun nerd culture words at the end. In total there are a little over 14,000 words.
I estimate that generated passwords have an entropy of 55. (log2 14000 x 4)
