Converting American light lager into craft beer enthusiasts? Nice work! I've been able to sway people with dark beers that "don't taste strong" and are surprisingly flavorful to those who think darker = stronger. To contrast the big three's yellow fizzy water with true pilsner goodness here are some of my faves:
1. Crisp by Sixpoint
2. Good Chit Pilsner by Rogue (Farms or whatever it's called)
3. Classic for the style Pilsner Urquell if you have access to a freah imported case
I find more people are turned away initially from double IPAs and other acquired tastes. But some ales, like brown ales and stouts tend to surprise newcomers. Some brews to consider...
1. Oatmeal Stout (locally I have Brown's, but Sam Smith's is awesome)
2. Brown Ale (Smuttynose brown, Sixpoint Brownstone, or Alesmith nut brown)
3. Porter (Siera Nevada, Russian River, Anchor)
Just some thoughts. You could always sneak a RIS or IIPA in at the end of the tasting too!