Well, here's the Spartan pics:

And I'll post sets I don't have:

2001:

All 2001 Rahi

All Toa Mata except Lewa and Pohatu

2002:

Gahlok, Nuhvok, Tahnok,

All Bohrok Va

Kopaka Nuva , Lewa Nuva, Onua Nuva

2003:

All sets except Guurahk, Hafu and Hewkii

2004:

Nuju, Nokama

All Vahki except Rorzakh

All titans

2005:

Every thing except Whenua, Matau and Vakama

2006:

Vezok, Reidak

Matoro, Nuparu

Vezon

Umbra

Irnakk

2007:

All titans except Nocturn.

Kongu and Hewkii

2008:

Antroz

All titans

All Matoran except Solek and Photok.

That's all folks!