I'm also a big zsh user, one of the biggest timesavers for me was to get autocompletion of the arguments from the last command working. I use meta-. for the last argument, but !:# syntax is awkward and I don't often remember exactly what number parameter something was. Took a bit of screwing around, but I eventually figured it out and the details are on the unix/linux stack exchange site: http://unix.stackexchange.com/questions/5229/add-arguments-f...
And:-
^Xg prefixes a git url with "git clone" and fills out the command line.Couple similar things for wget, youtube-dl here: https://github.com/gaving/dotfiles/blob/master/.zsh/config