1. cd /h/i/s/p/f/b/b<Tab> completes the full path to /home/ian/... -- the
   cursor is placed at ambiguities in the middle if they exist

2. completing globs like ls {a,b,c<Tab>}/foo

3. Normally in zsh/bash/readline, ^W deletes the previous word. In zsh you can
   modify what a word character is, so ^W for me deletes backwards until the
   rightmost slash. It's invaluable if you've chosen the wrong directory.

4. I could live without it, but **/foo*(.) is a lot shorter than `find . -type
   f -name 'foo'`

5. I could live without it, but one-line loops with for and while don't require
   do and done

6. I'm not sure if bash has this, but I can "defer" a command by hitting
   Meta-Q, which clears the prompt. After I run/cancel the new command, the
   command I hit Meta-Q on reappears in the prompt

7. I could live without it, but the prompt expansion has an 'if/else' notation