| Song | Big Bang Theory Theme |
| Artist | Barenaked Ladies |
| Album | Hits From Yesterday & The Day Before |
| [00:00.420] | Our whole universe was in a hot dense state' |
| [00:03.760] | Then nearly fourteen billion years ago expansion started. Wait... 140 |
| [00:07.800] | The Earth began to cool' |
| [00:08.800] | The autotrophs began to drool' |
| [00:09.800] | Neanderthals developed tools' |
| [00:11.0] | We built a wall （we built the pyramids）' |
| [00:13.800] | Math' science' history' unraveling the mysteries' |
| [00:16.500] | That all started with the big bang! |
| [00:19.0] | "Since the dawn of man" is really not that long' |
| [00:22.440] | As every galaxy was formed in less time than it takes to sing this song. |
| [00:25.870] | A fraction of a second and the elements were made. |
| [00:28.720] | The bipeds stood up straight' |
| [00:30.470] | The dinosaurs all met their fate' |
| [00:32.170] | They tried to leap but they were late |
| [00:33.390] | And they all died （they froze their asses off） |
| [00:34.930] | The oceans and pangea |
| [00:36.430] | See ya' wouldn't wanna be ya |
| [00:37.590] | Set in motion by the same big bang! |
| [00:40.610] | It all started with the big BANG! |
| [00:43.860] | It's expanding ever outward but one day |
| [00:49.810] | It will cause the stars to go the other way' |
| [00:54.920] | Collapsing ever inward' we won't be here' it wont be hurt |
| [01:00.320] | Our best and brightest figure that it'll make an even bigger bang! |
| [01:18.110] | Australopithecus would really have been sick of us |
| [01:20.830] | Debating out while here they're catching deer （we're catching viruses） |
| [01:23.650] | Religion or astronomy' Encarta' Deuteronomy |
| [01:27.210] | It all started with the big bang! |
| [01:29.970] | Music and mythology' Einstein and astrology |
| [01:33.320] | It all started with the big bang! |
| [01:34.320] | It all started with the big BANG! |
| [00:00.420] | Our whole universe was in a hot dense state' |
| [00:03.760] | Then nearly fourteen billion years ago expansion started. Wait... 140 |
| [00:07.800] | The Earth began to cool' |
| [00:08.800] | The autotrophs began to drool' |
| [00:09.800] | Neanderthals developed tools' |
| [00:11.0] | We built a wall we built the pyramids' |
| [00:13.800] | Math' science' history' unraveling the mysteries' |
| [00:16.500] | That all started with the big bang! |
| [00:19.0] | " Since the dawn of man" is really not that long' |
| [00:22.440] | As every galaxy was formed in less time than it takes to sing this song. |
| [00:25.870] | A fraction of a second and the elements were made. |
| [00:28.720] | The bipeds stood up straight' |
| [00:30.470] | The dinosaurs all met their fate' |
| [00:32.170] | They tried to leap but they were late |
| [00:33.390] | And they all died they froze their asses off |
| [00:34.930] | The oceans and pangea |
| [00:36.430] | See ya' wouldn' t wanna be ya |
| [00:37.590] | Set in motion by the same big bang! |
| [00:40.610] | It all started with the big BANG! |
| [00:43.860] | It' s expanding ever outward but one day |
| [00:49.810] | It will cause the stars to go the other way' |
| [00:54.920] | Collapsing ever inward' we won' t be here' it wont be hurt |
| [01:00.320] | Our best and brightest figure that it' ll make an even bigger bang! |
| [01:18.110] | Australopithecus would really have been sick of us |
| [01:20.830] | Debating out while here they' re catching deer we' re catching viruses |
| [01:23.650] | Religion or astronomy' Encarta' Deuteronomy |
| [01:27.210] | It all started with the big bang! |
| [01:29.970] | Music and mythology' Einstein and astrology |
| [01:33.320] | It all started with the big bang! |
| [01:34.320] | It all started with the big BANG! |