1)the most boring housemate:

SNOOZIE
2)the most exciting/hyper housemate:

Most hyper of course would be Shabaz - most exciting would be Glyn, though.
3)the most irritating housemate:

Jayne by miles
4)the most mental housemate:

It's too easy saying Shabaz, so I'll say Lisa
5)the most emotional housemate:

Real emotions? Nikki. Fake emotions? Aisleyne
6)the most gross housemate:

Jayne Jayne JAYNE