Have... Have We Met?

Horde players! Note that [npc=26170] can only be spawned as an assistant for alliance players.
Alliance players! Note that [npc=52238] can only spawn to assist his horde comrades!

Also note that you can get 4xHyjal Protectors sometimes, this is not a bug, and this is your share of guardians this day, meaning that abandoning and/or anything else will not help in getting one of the elites.

Cheers

Linken: You think I should?
Thassarian: Why not? You only live once... if your lucky...
Mankrik: I miss my wife...
Nat Pagle: Reel 'er in, then give 'er some slack, then reel 'er in, then give 'er some slack then reel e'r -
Linken: Alright alright! (walks over to Chromie) Hey baby, I just got out of a long-term relationship...
Chromie: I know. Sorry kid, I'm a 906 year old dragon. And possibly a guy.
Linken:D:>
Nesingwary: Did someone say 906 year old dragon? >:D

If you don't want to spam /wave emotes, here's an alternative:

/cleartarget
/tar Linken
/tar Nat Pagle
/tar Mankrik
/tar Hemet
/tar Chromie
/tar Thassarian
/stopmacro [noexists]
/wave
It tries to target one of the NPCs, if it doesn't find one, it stops and does not /wave :)
Of course it can only catch one at a time, so you have to edit out those that you already have.

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If you don't even want to maintain the macro (e.g. multiple characters) and just spam it, here's a mini-addon (because it's too large* for just one macro slot) that does all this:

run this first, only necessary once (per game session) - you can also put this into some addon's code (if you're familiar with that)/run wave=function() local a,x,n,c=5865,{} for i=1,GetAchievementNumCriteria(a) do n,_,c=GetAchievementCriteriaInfo(a,i) if not c then x[n]=1 end end if x[UnitName("target")] then DoEmote("wave") end end
the one you can spam is:/tar Linken
/run wave()
/tar Nat Pagle
/run wave()
/tar Mankrik
/run wave()
/tar Hemet
/run wave()
/tar Chromie
/run wave()
/tar Thassarian
/run wave()
Note: you have to press it twice if two of those characters are present, macros can only perform one emote per run. On the plus side, it doesn't clear your current target when there is no fitting NPC around.

*edit* the second macro wasn't working correctly when it saw two NPCs at the same time, to the point of thinking it waved at one of them when it didn't, and hence didn't wave at them until you relogged. Fixed that :)
*edit2, 2011-12-02* cleaned up the code a bit, removed an unnecessary variable. No functional changes though, no need to update

* to the coders who say that you can do the first macro with a lot less characters: of course, but still too large to include the second macro (only got it down to 194 chars) so after I was done writing it, I expanded it again for readability and to use safer variable names