The ~/.bash_login file is a pretty good place to put your shell paths and variables for Mac’s Terminal. For future reference here is a copy of my .bash_login file:

# Path, Shell variables
export PATH="/usr/local/bin:/usr/local/sbin:$PATH"
export SVN_EDITOR="/usr/bin/mate -w"

# Backpack
alias todo='ruby /Applications/backpack/todo.rb'

# Finder
alias ot='open .'

# General
alias code='cd Documents/code/'
alias sites='cd Sites/'
alias backup='. /Applications/s3backup/backup.sh'

# Git
alias gst='git status'
alias gu='git pull'
alias gp='git push'
alias gd='git diff | mate'
alias gc='git commit -v'
alias gca='git commit -v -a'
alias gb='git branch'
alias gba='git branch -a'

# Rails
alias ss='./script/server'
alias sc='./script/console'
alias sg='./script/generate'
alias sp='./script/plugin'

# Ruby
alias sgi='sudo gem install'

# s3sync
alias s3cmd='ruby /Applications/s3backup/s3cmd.rb'

# SSH

# Static Matic
alias sm='staticmatic'
alias smb='staticmatic build .'
alias smp='staticmatic preview .'
alias sms='staticmatic setup'

# Subversion
alias sup='svn update'
alias sst='svn status'
alias scom='svn commit'
alias sd='svn diff | mate'
alias slog='svn log | mate'
alias sex='svn export'
alias srm='svn rm'

# TextMate
alias et='mate .'
alias etr='mate app config lib db public test vendor/plugins'

If you have any tips or tricks please post them.