Somewhat less with time, as bash
functions are preferred and more powerful handle arguments, multi-step processing, logic).
But yes, for basic arguments, particularly for ls:
alias ls='ls -F'
alias la='ls -A'
alias ll='ls -l'
Occasionally for other commands for which the default is not ideal. w3m, for example, will read the bookmarks file if URL is passed, with '-B', but otherwise exits with an error, which is annoying.
alias w3m='w3m -B'
Git commands, as others note.