Not sure its been discussed but I am a collector.... Yeah you read me.

I caught the yellow fever when I arrived in Asia and since then, I have my own scorecard (In my head, am not that dumb I have an SO!) punching the holes ( hum hum ) of all the nationalities I've had the pleasure to encounter and appreciate. . Appreciate.... Yeah.... Hum....sorry...

So, where was I? Mmmmm yes, some are really easy to get (PRCs, Vietnamese) some a little more challenging (indian? Locals in hk and singapore) but doable and some I've never seen...
So far I've tried china, japan, korea, vietnam, laos, cambodia, thai, indian, Indonesia, philippines.... Am missing some more remote countries now (havent tried sgp yet and not hk either as I dont shit in my own backyard! ).

Am I the only one keeping track of that here (I doubt we're all dirty old boys here! ) and has anyone already done a gran slam (all asian natinalities up to pakistan)? Am sure some of the vets here may be close to it, but wonder if this quest is achievable or not! ;) dont want to end up like the knights of the round table!

Not consciously but maybe subconsciously. Never had Japanese or Korean. I'm almost opposite to you in that I've had a fair few local HK but not any of from pretty much most of those countries you mentioned!
Not so keen on Indian (although some OL's I've seen are very hot) but must try Japanese/Korean before I pop my cork!

The US is expensive...  but quite a smorgasbord of international identities on the WG front...  While I was there, I had Korean, Japanese, Hong Kong, Thai, Indian, Pakistani, Bangladeshi...  Russian, Bulgarian, Croatia, English, French, Spanish...  a few assorted Balkan countries...  and, of course, Canada and Mexico...  Costa Rica, Dominican Republic, Brazil, Colombia, Venezuela, Panama...  and shit, I'm sure I did a German and Austrian in there somewhere...  oh, and at least South Africa, Kenya, and Morocco from that continent...

Of course, having been in Asia for several years, I've done a little "infill drilling" as the oil-patch guys would say...

It's a great life, no?

Have fun, CGP