Courtesy of scummer Grak, here is a check list and pictures of what parts there are and where you'll find them:

Note: The definition of which arms and legs are left or right vary from source to source.

Astromechs:

TLC Wave 1:

R4-D6 Body - Leektar & Nippet (BD04) or Imperial EVO Trooper (GH04)
R4-D6 Head & Third Leg - Chewbacca (BD03) or Darth Vader (GH03)
R4-D6 Left Leg - Han Solo (BD01) or Commander Gree (GH01)
R4-D6 Right Leg - Luke Skywalker (BD02) or Kashyyyk Trooper (GH02)

R7-Z0 Body - Bane Malar (BD07)
R7-Z0 Head & Third Leg - Darth Vader (BD08)
R7-Z0 Left leg - Ak-Rev (BD05)
R7-Z0 Right leg - Yarna D'al' Gargan (BD06)

TLC Wave 2:

R4-J1 Body - IG Lancer Droid (BD13)
R4-J1 Head & Third Leg - Clone SCUBA Trooper (BD10)
R4-J1 Left Leg - Obi-Wan Kenobi (BD09)
R4-J1 Right Leg - Clone Trooper Quad Cannon (BD16)

R7-T1 Body - Mon Calamari Warrior (BD14)
R7-T1 Head & Third Leg - Quarren Soldier (BD15)
R7-T1 Left Leg - Padme Amidala (BD12)
R7-T1 Right Leg - Saesee Tiin (BD11)

TLC Wave 5:

R2-L3 Body - Trinto Duaba & Dice Ibegon (BD37)
R2-L3 Head & 3rd Leg - Wioslea (BD36)
R2-L3 Left Leg - Obi-Wan (BD34)
R2-L3 Right Leg - Pons Limbic (BD35)


R5-A2 Body - Jawa & WED Droid (BD33) or Clone Trooper (327th Star Corps)
R5-A2 Head & 3rd Leg - Spacetrooper (BD32) or Luke (Sandstorm)
R5-A2 Left Leg - Luke (Stormtrooper) (BD30) or Commander Faie
R5-A2 Right Leg - Han (Stormtrooper) (BD31) or General Grievous

TLC '09 Wave 4


Malakili
Major Pano
Nikto Gunner
Slave Leia
Luke Skywalker (Death Star)
Ewoks
Nien-Nunb
Giran

TLC '09 Wave 5


R2-D2
Chewbacca
Jawa & Security Droid
Concept Ki Adi Mundi
Imperial Scanning Crew Technician
Hrcheck Kal Fas
Han Solo
Leesub Sirin

Protocols:

Walmart Exclusive

C-3PX Torso - Kit Fisto/R4-H5
C-3PX Head - Watto/R2-T0
C-3PX Left arm - Darth Vader/K-3PX
C-3PX Right arm - Luke Skywalker/R2-D2
C-3PX Left leg - Han Solo/R-3PO
C-3PX Right leg - Plo Kloon/R4-F5

Walmart Exclusive

Dark Trooper Phase II Torso - Corran Horn/R2 Whistler
Dark Trooper Phase II Head & Blaster - General Grevious/CB-3D
Dark Trooper Phase II Arms - Anakin Skywalker/Cortosis Battle Droid
Dark Trooper Phase II Legs- Darth Maul/I-5YQ
Dark Trooper Phase II Backpack - Boba Fett/BL-17

TLC Wave 3:

5D6-RA-7 Torso - Clone Trooper (Coruscant Landing Platform) (BD17) or Obi-Wan Kenobi (BD09 repack)
5D6-RA-7 Head - Jodo Kast (BD18) or Clone Trooper (BD16 repack)
5D6-RA-7 Left arm - Imperial Engineer (BD22) or EVO Trooper (GH04 repack)
5D6-RA-7 Right arm Count Dooku (Hologram) (BD21) or Kashyyk Trooper (GH02 repack)
5D6-RA-7 Left leg Saleucami Trooper (BD20) or Commander Gree (GH01 repack)
5D6-RA-7 Right leg - Yaddle & Even Piell (BD19) or Darth Vader (BD08 repack)

TLC Wave 4:

MB-RA-7 Torso - Commander Faie (BD24) or Clone Trooper (327th Star Corps) (BD29)
MB-RA-7 Head - General Grievous (BD25) or Darth Vader
MB-RA-7 Left Arm - Stass Allie (BD23) or Kashyyyk Trooper
MB-RA-7 Right Arm - Bail Organa (BD26) or Clone Trooper (Coruscant Landing Platform)
MB-RA-7 Left Leg - Breha Organa(BD27) or Jodo Kast
MB-RA-7 Right Leg - FX-6 (BD28) or Saleucami Trooper

TLC '09 Wave 1

U-3PO Torso - Emperor Palpatine (BD39) or Obi-Wan Kenobi (General) or Kashyyyk Trooper
U-3PO Head - Luke Skywalker (BD38) or Darth Vader
U-3PO Left Arm - Ugnaught (BD43) or Clone Trooper (Heavy Gunner) or Jawa & WED Droid
U-3PO Right Arm - Hoth Rebel Trooper (BD42) or Luke Skywalker (Stormtrooper) or Ben (Obi-Wan) Kenobi
U-3PO Left Leg - Captain Needa (BD40) or Coruscant Clone Trooper or General Grievous
U-3PO Right Leg - Princess Leia (BD41) or Imperial Engineer or Han Solo (Stormtrooper)

TLC '09 Wave 2

HK-47 Torso - Beru Whitesun (BD45) or Jango Fett (BD51)
HK-47 Head & Rifle - Obi-Wan Kenobi (BD44) or Anakin Skywalker (Jedi Hero) (BD50)
HK-47 Left Arm - Tarados Gon (BD49) or Spacetrooper
HK-47 Right Arm - Anakin Skywalker (Concept) (BD48) or Hoth Rebel Soldier
HK-47 Left Leg - Owen Lars (BD46) or Clone Pilot (BD52)
HK-47 Right Leg - Captain Typho (BD47) or ARC Trooper (BD53)

TLC '09 Wave 3

L8-L9 Torso - Gungan Warrior (BD07)
L8-L9 Head - Ob-Wan Kenobi (BD06)
L8-L9 Left arm - (By a process of elimination) Queen Amidala (BD08)
L8-L9 Right arm - Rum Sleg (BD09)
L8-L9 Left leg - Darth Sidius Hologram (BD10)
L8-L9 Right leg - Clegg Holdfast (BD11)

TLC '09 Wave 6

Commander Cody
Plo Kloon
Agen Kolar
Captain Colton
Varactyl Wrangler
Concept IG-88

TLC '09 Wave 7

HK-50 Torso - AT-AT Driver (BD49) or Commander Bacara
HK-50 Head - Luke Snowspeeder (BD51) or Commander Deviss
HK-50 Left arm - Bespin Wing Guard (BD50) or Plo Koon
HK-50 Right arm - Willrow Hood (BD53) or Agen Kolar
HK-50 Left leg - Zuckuss (BD54) or Snowtrooper
HK-50 Right leg - Concept Art Snowtrooper (BD48) or R2-X2 (BD52)

TLC '10 Wave 1

K'Kruhk
Jaina Solo
Spacetrooper
TFU Shaak Ti
Jacen Solo
Dark Trooper Phase I