Ohh boy. Get ready for the best TV series of all time my friend.
First things first, watch the miniseries
Night 1 (1.5h) Night 2 (1.5h)
Then just jump straight in.
Season 1 1.01 33 1.02 Water 1.03 Bastille Day 1.04 Act of Contrition 1.05 You Can't Go Home Again 1.06 Litmus 1.07 Six Degrees of Separation 1.08 Flesh and Bone 1.09 Tigh Me Up, Tigh Me Down 1.10 The Hand of God 1.11 Colonial Day 1.12 Kobol's Last Gleaming, Part I 1.13 Kobol's Last Gleaming, Part II
Season 2 2.01 Scattered 2.02 Valley of Darkness 2.03 Fragged 2.04 Resistance 2.05 The Farm 2.06 Home, Part I 2.07 Home, Part II 2.08 Final Cut 2.09 Flight of the Phoenix 2.10 Pegasus (56 minute extended version) 2.11 Resurrection Ship, Part I 2.12 Resurrection Ship, Part II 2.13 Epiphanies 2.14 Black Market (If I had to skip 1 episode it would be this one) 2.15 Scar 2.16 Sacrifice 2.17 The Captain's Hand
Razor (101 minute extended version - not the 81 minute broadcast version) TV movie. If you have this on DVD or Bluray, you have the extended version.
Important note: This was originally broadcast just before Season 4, but chronologically it fits here, telling more of the Pegasus's story. Some people argue it's better to watch after Season 3, as originally broadcast, but it makes most sense to watch it here.
The reason that the placement of Razor is a hotly contested issue among BSG fans is because of a bit of dialogue at the very end (in the last 10 minutes) which sets the tone for Season 4 (barely even a spoiler). Everything else in this TV movie is not a spoiler.
2.18 Downloaded 2.19 Lay Down Your Burdens, Part I 2.20 Lay Down Your Burdens, Part II
The Resistance A 10 episode web-based series bridging seasons 2 and 3. (25 mins.)
Season 3 3.01 Occupation 3.02 Precipice 3.03 Exodus, Part I 3.04 Exodus, Part II (Oh buddy hold on to your socks) 3.05 Collaborators 3.06 Torn 3.07 A Measure of Salvation 3.08 Hero 3.09 Unfinished Business (70 minute extended version - Note: Not included on Region 2 DVDs, but is included on ALL Bluray releases.) 3.10 The Passage 3.11 The Eye of Jupiter 3.12 Rapture 3.13 Taking a Break From All Your Worries 3.14 The Woman King 3.15 A Day in the Life 3.16 Dirty Hands 3.17 Maelstrom 3.18 The Son Also Rises 3.19 Crossroads, Part I 3.20 Crossroads, Part II
Razor: Yes, this again. (Well this is where Razor was originally broadcast, after all.) Remember the last 10 minutes where I told you to MUTE two small moments? Well, guess what, now is when you get to go back and hear what was said. Watch the last 10 minutes of Razor here.
Season 4 4.01 He That Believeth In Me 4.02 Six of One 4.03 The Ties That Bind 4.04 Escape Velocity 4.05 The Road Less Traveled 4.06 Faith 4.07 Guess What's Coming to Dinner? 4.08 Sine Qua Non 4.09 The Hub 4.10 Revelations
Season 4 Continued (aka "Season 4.5" or "The Final Season") 4.11 Sometimes a Great Notion
The Face of the Enemy A 10 episode web-based series (although it plays together like an intense mini-episode). (36 mins.)
4.12 A Disquiet Follows My Soul (53 minute extended version - only on Bluray releases) 4.13 The Oath 4.14 Blood on the Scales 4.15 No Exit
The Plan (DVD/Bluray movie) A stand-alone movie that shows (approximately) the first two seasons from the Cylons' perspective. (You finally get to see "The Plan", mentioned all those times in the opening sequence!) Although The Plan was originally released after the show had finished, it is generally agreed that it should be watched here, so that everything is all tied up when you do reach the end.
4.16 Deadlock 4.17 Someone to Watch Over Me 4.18 Islanded In a Stream of Stars (62 minute extended version - only on BluRay releases and Region 1 DVDs) 4.19 Daybreak (150 minute extended version - only on BluRay releases and Region 1 DVDs)
YOU DID IT YAY! Wasn't that something? Now go watch Caprica and Blood and Chrome if you haven't had enough of the 12 colonies.