UCK868 Beach Trooper
BEN917 Ben Kenobi (GHOST)
VHY832 Bespin Guard
WTY721 Bib Fortuna
HLP221 Boba Fett
BNC332 Death Star Trooper
TTT289 Ewok
YZF999 Gamorean Guard
NFX582 Gonk Droid
SMG219 Grand Moff Tarkin
NAH118 Greedo
PEJ821 Greedo
YWM840 Han Solo (Hood)
NXL973 IG-88
MMM111 Imperial Guard
BBV889 Imperial Officer
VAP664 Imperial Shuttle Pilot
CVT125 Imperial Spy
JAW499 Jawa
JAW499 Jawa
UUB319 Lobot
SGE549 Palace Guard
CYG336 Rebel Pilot
EKU849 Rebel Trooper (Hoth)
YDV451 Sand Trooper
YDV451 Sand Trooper
GBU888 Skiff Guard
NYU989 Snow Trooper
PTR345 Stromtrooper
HHY382 The Emperor
HDY739 TIE Fighter
NNZ316 TIE Fighter Pilot
QYA828 TIE Interceptor
PEJ821 Tusken Raider
UGN694 Ugnaught

Unlockables  - 

All the Episode 4 character prices:

Beachtrooper pay 20,000
Deathstar Trooper pay 19,000
Grand Moff Tarkin pay 38,000
Greedo pay 60,000
Imperial Officer pay 28,000
Imperial Shuttle Pilot pay 29,000
Imperial Spy pay 13,500
Jawa pay 24,000
Sandtrooper pay 14,000
Stormtrooper pay 10,000
TIE fighter Pilot pay 21,000
Tusken Raider pay 23,000

All the Episode 5 Character prices:

Bespin Guard 15,000
Han Solo (hood) 20,000
Lobot 11,000
Luke Skywalker (hoth) 20,000
Rebel Pilot 15,000
Rebel Trooper (hoth) 16,000
Snowtrooper 16,000
Ugnaught 36,000

All the Episode 6 character prices:

Unlockable How to Unlock

4-Lom 30,000
Admiral Ackbar 30,000
Anakin Skywalker (Ghost) 1,000,000
Ben Kenobi (Ghost) 1,100,000
Bib Fortuna 16,000
Boba Fett 175,000
Bossk 40,000
Dengar 40,000
Ewok 34,000
Gamorrean Guard 40,000
Gonk Droid 1,550
IG-88 30,000
Imperial Guard 45,000
Palace Guard 14,000
Princess Leia (Prisoner) 15,000
Skiff Guard 12,000
The Emperor 275,000
Yoda (Ghost) 1,200,000

Stud Fountain  -  Once you complete the jedi meter for free play and story and collect all the minikits for every single level you can go outside of the cantina and build a fountain with all the bricks you have collected and when you have done this you have your very own stud fountain that spits out a estimate of 100,000!

By getting gold bricks and beating story mode, you can unlock many things

Bounty hunter missions Purchase Bounty hunters
Cantina Gold bricks Beat all 10 bounty hunter missions and story mode
Episode IV bonuses Get 8 gold bricks
Episode V bonuses Get 16 Gold bricks
Episode VI bonuses Get 32 Gold bricks
LEGO city Playground Get 60 Gold bricks
Minikit bonuses Unlock all minikits
Slave 1 Collect All 180 MiniKits
Stud fountain get 99 gold bricks
SUPER CHARACTER Use a bounty hunter head with a red lighsaber
Use all panels EXCEPT storm troopers Use IG-88
Use episode 1,2,+3 characters Buy Use save from cantina