My favourite part of Metrotown? The door located beneath the Exit sign.
Haven't been there in at least half a dozen years now but my favourite stores back in the day were Rainforest Cafe, Playdium and that cinnamen bun store by McDonalds (Cinzeo?). Used to hang out at the Red Robins and Boston Pizza all the time late at night when I was still dating my ex out in Burnaby.
Oh, and don't forget that Warhammer store.
I was sad when they got rid of that first level food court in the shitty second half of the mall. Was that the Metropolis section? I liked going there because no one knew about it and there were never any lineups for food.