Neato .bashrc functions

Saw these three functions in this thread on the Arch Linux forum and thought they were neat. Since I'm on the parents' computer I thought I'd stick them here for the next time I'm on my eee (which is happily running Arch) or for when someone is googling about for .bashrc stuff :).

# from user semperfiguy's .bashrc
extract () {
 if [ -f $1 ] ; then
     case $1 in
         *.tar.bz2)   tar xjf $1        ;;
         *.tar.gz)    tar xzf $1     ;;
         *.bz2)       bunzip2 $1       ;;
         *.rar)       rar x $1     ;;
         *.gz)        gunzip $1     ;;
         *.tar)       tar xf $1        ;;
         *.tbz2)      tar xjf $1      ;;
         *.tgz)       tar xzf $1       ;;
         *.zip)       unzip $1     ;;
         *.Z)         uncompress $1  ;;
         *.7z)        7z x $1    ;;
         *)           echo "'$1' cannot be extracted via extract()" ;;
     esac
 else
     echo "'$1' is not a valid file"
 fi
}

# from user kaKTuZ's .bashrc
function remindme()
{
sleep $1 && zenity --info --text "$2" &
}

# from uer Daenyth's .bashrc
function weather ()
{
 links -dump "http://google.com/search?q=weather+${1:-02135}"
  | grep -A 5 -m 1 '^ *Weather for' | grep -v 'Add to'
}