Then of course there's always this (yes I realize the greetings arent 100% identical):

Code:
on !*:join:*: {
 describe # watches as $nick makes their way into the channel.
 if ($chan == #santharia) { //msg # 4"Welcome to the elusive channel # $+ , $nick $+ ." }
 elseif ($chan == #grayhawk) { //msg # 4"Welcome to the dedicated Dungeons and Dragons channel of # $+ , $nick $+ ." }
 elseif ($chan == #GM_Repo) { //msg # 4"Welcome to Friday Night at Repo's which take place in # $+ , $nick $+ ." }
 elseif ($chan == #ooc) { //msg # 4"Welcome to OOC: Sit down, shut up...and hold on $nick $+ !" }
 elseif ($chan == #klintorth) { //msg # 1"Welcome to the friendly and welcoming channel of # $nick $+ ." }
}

Those who fail history are doomed to repeat it