Here's my list in release order :
001 - Luke Skywalker (Jedi) Customized beyond recognition
002 - Anakin Skywalker Customized
003 - Vader - Anakin Skywalker Sold
004 - Kit Fisto
005 - Han Solo (Bespin) gave it to my son
006 - Mace Windu
007 - Obi-Wan Kenobi (ROTS)
008 - Qui-Gon Jinn
009 - Darth Maul
010 - Bib Fortuna
011 - Salacious Crumb
012 - Probe Droïds Set (3)
013 - Jabba the Hutt
014 - Jabba’s Throne
015 - Endor Rebel Infantry
016 - Endor Rebel Sergeant
017 - Endor Rebel Pathfinder
018 - Luke Skywalker (Yavin Hero)
019 - Plo Koon
020 - Mechno-chair w/Holo Sidious
021 - Leia in Boushh Disguise
022 - Asajj Ventress
023 - Buboicullar
024 - Dejarik Table
025 - Princess Leia Organa
026 - Obi-Wan ‘’Ben’’ Kenobi
027 - Luke Skywalker (Bespin) gave it to my son
028 - Palpatine/Sidious 2-Pack
029 - Commander Praji
030 - Padmé Amidala
031 - Han Solo (Smuggler) Customized
032 - Luke Skywalker (Farmboy)
033 - Aayla Secura
034 - Obi-Wan Kenobi (AOTC)
035 - Rebel Fleet Trooper
036 - Ki-Adi Mundi
037 - Captain Antilles
038 - Stormtrooper
039 - Obi-Wan Kenobi (CW)
040 - Utapau Clone Trooper
041 - Han Solo in Carbonite
042 - Stormtrooper Commander
043 - Darth Vader Customized
044 - Han & Luke Storm Disguise
045 - Admiral Piett
046 - Sandtrooper - Sergeant
047 - Lando Calrissian
048 - Imperial Shock Trooper
049 - Grand Admiral Thrawn
050 - Clone Trooper Phase I
051 - Anakin Skywalker (TCW)
052 - Sandtrooper - Squad Leader
053 - Sandtrooper - Corporal
054 - Clone Lieutenant Phase I
055 - Palpatine’s Throne
056 - Coruscant Clone Trooper
057 - Emperor Palpatine
058 - 501st Clone Trooper
059 - Mos Eisley - Cantina
060 - Blackhole Stormtrooper
061 - Greedo
062 - Mos Eisley - Nadon’s Nook
063 - Momaw Nadon
064 - Captain Rex
065 - Gamorrean Guard
066 - Yoda – jedi Mentor
067 - Clone Sergeant Phase I
068 - Commander Cody
069 - Yoda’s Hutt
070 - Gamorrean Guard - Gartogg
071 - Clone Commander phase I
072 - Boil & Waxer w/ Numa
073 - Jabba’s Palace Archway
074 - Commander Bly
075 - Yoda – “Christmas Santa”
076 - Figrin D’An
077 - Utapau Shadow Trooper
078 - Sandtrooper - Desert Sands
079 - Dewback
080 - Commander Gree
081 - Infantry Battle Droïd 2-pack
082 - IG-88
083 - Clone Captain phase I
084 - 442nd Clone Trooper
085 - Tedn D’Hai & Nalan Cheel
086 - Commander Bacara
087 - Boba Fett (ESB)
088 - Commander Fox
089 - Tech Mor & Doikk Nats
090 - Commander Ganch
091 - Mos Eisley – Band’s Nook
092 - STAP w/ Battle Droïd
093 - Tusken Raider
094 - Commander Neyo
095 - OOM-9
096 - Utapau Airborne Trooper
097 - E-Web Heavy repeat. Blaster
098 - Bossk want to get this one
099 - Snowtrooper
100 - Obi-Wan Kenobi (TPM)
101 - Yoda – Jedi Master
102 - Darth Vader DX
103 - Commander Wolffe
104 - Darth Malgus
105 - Clone Trooper Deluxe : Veteran
106 - Clone Trooper Deluxe : Shiny
107 - Boba Fett – Prototype Armor
108 - General Grievous
109 - Clone Trooper Deluxe : 501st
110 - Clone Trooper Deluxe : 212th
111 - Security Battle Droïd 2-Pack
112 - Echo & Five
113 - Imperial Probe Droïd
114 - Geonosis Infantry battle Droïd
115 - Geonosis Com. battle Droïd
116 - Luke Skywalker (Echo Base) pre-ordered
117 - Tauntaun
118 - Han Solo (Echo Base) pre-ordered
119 - 104th Clone Trooper “Wolfpack”
120 - R2-D2 pre-ordered
121 - Captain Rex - Phase II
122 - Bomb Squad Clone Trooper
123 - Cad Bane in Denal Disguise
124 - Jango Fett
125 - ARC Clone Trooper : Echo
126 - ARC Clone Trooper : Fives
127 - Scout Trooper
128 - Speeder Bike
129 - C-3PO
130 - Luke Skywalker (X-Wing Pilot)
131 - Imperial Tie Fighter Pilot
So, depending on you counting 2-Packs as separate figures and including dioramas and accessories or not, Sideshow are indeed at around 150 pièces in their 1:6 Star Wars line.