That's very cute! I like the lackadaisical way Methos explains Immortals to Lex... nothing special, just another day, la la la. And Lex's response is just classic. Fun little ficlet!

But tell me, was the "oh, we'll just kick the alien off the planet because it's not like we haven't done it before" line a nod to Stargate verse, perhaps? Because that would be the piece de resistance! ;)