How the hell is that 7 word phrase with punctuation (I'll ignore the case, as only the first word is capitalised) susceptible to a dictionary attack?
If I tell you that my password contains 7 words (contained in my /usr/share/dict/words which is 99171 lines long), with a comma after the 3rd and a full stop at the end, you will still have to search through 94,339,343,028,749,422,154,850,189,341,666,091 (9.4E34) combinations - best get cracking. If I'm even nicer to you and tell you that none of the words are repeated, then there are only 94,319,367,837,042,826,040,647,505,756,227,200 (9.4E34). It turns out that when I'm being nice, I'm not being that helpful.
I do use random alphanumeric passwords, because I can remember quite a few of them - it takes a while to remember them and it's massively annoying when I have to change one.
However for my company's keepass file, I use a pass-phrase that is an incorrect quotation from a well know poem - go on, have a guess.