imo these are the best races for shammies: TAUREN because u get that fucking warstomp which is so op cause it means u can es sum1 then warstomp them and uve got urself a double intterupt tauren def for pvp, but if ur gna go enh all the way including for pvp and pve at 70 id suggest an orc lol ask any shammie how fun it is to fight a rogue with thier bs stuns if ur an orc u get the racial with stun resists and u also get bloodfury which boots ur dmg for 15secs which HEY! just so happens to b the same time ur shammie rage works for !!!
the draenei is my fav for pvp healing, thier racial heal means if u cast that first ppl genrally try to silence or counterspell or es etc u, but since its a holy spell it means it wont lock u out of any of ur other heals which is a pretty big bonus 0h and gift of the naruu and earthshield at the same time and ur unkillable lol