Basman used to play some weird openings and win. So did Miles 1...a6 against Karpov when Karpov was in his prime. Miles did win that game.
As for me, my chess standard is so low that I can lose to any opening. I hope all my oppornents play 1. g4 2.f4 in all my games.
montevideo defense 1. d4 Nc6 2. d5 Nb8. Beginner's trap and Mellow Hay trap show some promise
oops...thanks, that happens when u stay up late...gg
Some book publishers (like the ones that produce ECO) have tried to make catalogues of all openings. I think it's a bit too much to call them a list of "official openings" though.
mm...well, maybe they're not official...but I was bored so you can actually also throw that topic to the trash...gg
No, it's a fun topic :-) I just need to point out stuff like that for some reason...
The benko does has some Idea, it would be to rip apart white's kingside ASAP.
I've played the Anderssen's. Not in serious games, but it is sorta fun when you feel like playing black.
The Canary Defence or Double Bird
1.d4 d5 2.f4 f5
Never saw this one before, Conquiscador! But I'll guess the Idea is to grab as much center space as possible, thus it's sound...
The Irish (or Chicago) gambit!
Never come across the nicely named "canary defense" before. The only example between master level players is Pedersen-Nielsen 1994, and that looks like a fake, as it was a "grandmaster draw" in 4 moves, probably prearranged, so the moves are irrelevant. Neither white's second move nor black's second move look that bad to me, despite their relative rarity, given that the game is likely to end up in a stonewall attack or a double stonewall, respectively. There are a few genuine master games starting with 1. d4 d5 2. f4, but it does not even merit a name in the Oxford companion to chess (1996) (still less the far rarer "canary").
As for the Chicago gambit, 1. e4 e5 Nf3 Nc6 Nxe5, its surprise value seems be inadequate, based on the 0-7 score it has achieved in my database. 
[P.S. concerning one of the lines in the original post, surely the correct moves for the Montevideo defense must be 1.d3 Nf6 2.d4 Ng8 3.d5, which reaches the required position. Three other move sequences will also do!]
Hippotomus Defense. http://en.wikipedia.org/wiki/Hippopotamus_Defence
Maybe its not wierd enough, since it has (very very rarely) been played at the highest levels.
Some of the recent examples are positively respectable by comparison with the offbeat early ones in this discussion!
You forgot: "Ladies and gentleman, the leader of the free world, the President of the United States." That's not only a weird opening, but it's kind of creepy.
You forgot: "Ladies and gentleman, the leader of the free world, the President of the United States." That's not only a weird opening, but it's kind of creepy.
you forgot, "winner of nobel peace prize for making the usa less safe from terrorists."
King's Knight opening
1.e4 e5 2.Nf3 Bd6 3.Bc4 Nf6 4.0-0
Here is one I like to play and surprisingly it is playable.
1.e4 e5 2.Nf3 Nc6 3.Bb5 g5
Im bored, and so I wanted to do something...gg
1. A00: Anderssens Opening: 1. a3? Polish gambit: 1...a5? 2. b4?!
2. A00: Clemenz Opening: 1. h3? Spike Lee Gambit: 1...h5? 2. g4?!
3. A00: Crab Opening: 1. a4/h4? 1...e5 2. a4/h4??
4. A00: Creepy Crawly Formation: Classical Defense: 1. a3/h3? 1...e5/d5 2. a3/h3?? 2...d5
5. A00: Global Opening: 1. h3/a3? 1...e5 2. h3/a3??
6. A00: Kadas Opening: 1. h4? Beginners trap: 1...d5 2. Rh3?? Gambit #1: 1. h4? 1...c5 2. b4!? Gambit #3: (Gambit nr.2 is more less normal...) 1. h4? 1...e5 2. d4 2...exd4 3. c3!? Schneider Gambit: 1. h4? 1...g5!? Steinbook gambit: 1. h4? 1...f5 2. e4!? 2...fxe4 3. d3!?
7. A00: Ware Opening: 1. a4? Meldow Hay Trap: 1...e5 Ra3??
8. A40: Australian Defense: 1. d4 1...Na6?!
9. A40: Montevideo Defense: 1. d5??? no, its not a mistake...look at that when you set up a thematic tournament, its in the lost of positions! and so I declare that 1. d5??? is a LEGAL MOVE! gg...
10. A46: Doery Defense: 1. d4/Nf3 1...Nf6 2. d4/Nf3 2...Ne4?!
11. B00: Karrs defense: 1. e4 1...h6?
12. B00: Fried Fox defense: 1.e4 1...f6 2. d4 2...Kf7??
13. B00: Goldsmith Defense: 1. e4 1...h5?
14. B00: Lemmings defense: 1. e4 1...Na6?!
15. B00: St. Georges Defense: 1. e4 1...a6?
16. B00: Ware Defense (NOT ware opening!): 1. e4 1...a6?
17. B20: King Pawn Opening: Speers Opening: 1. e4 1...e5 2. Qf3?! 2...Nf6 3. Qf5?
18. D00: Amazon Opening: 1. d4 1...d5 1. Qd3?!
19. E00: Amar Opening: 1. Nh3?!
20. Finished! have fun looking and eventually "playing" those weird openings! gg