Command-T is an awesome vim plugin installed by default on the Pivotal workstation. There are some great keyboard shortcuts that make it even better.

Normally to use Command-T, you type leader-f, locate your file using the fuzzy finder, then hit <CR> (vim-speak for carriage return) to open it. But instead of <CR>, you can hit the following:

<CR>        open the selected file
<C-CR>      open the selected file in a new split window
<C-s>       open the selected file in a new split window
<C-v>       open the selected file in a new vertical split window
<C-t>       open the selected file in a new tab

<C> is control. To learn more about Command-T, type

:help command-t

At the vim prompt. Thanks to my pair today, Ian Zabel, for showing me this stuff.