Actuallu, I really like Nicole in SGB. How she comes up with those hints under time-presurre amazes even the guests themselves! She's smart, funny, talented and witty too!
I loved the Idol Show episode of SY and Shindong! It was so natural and they seem to enjoy the "date" very much.
For Gyuri, she seems to like manly men so the guys from 2PM might suit her tastes.