Question:
Originally Posted by akenep I am looking for a "sleeper" ...a scent that I can wear on airline flights when I traveling for my job, something that will not offend.

Is there something out there like this, that does'nt cost a small fortune? A little more information would be REALLY helpful like...what is you gender? How old are you? (It should be mandatory to click one little box when you register).

Originally Posted by akenep I'm not looking for the usual like...Gendarme, TM, Clean, Eau d'Orange, IM, etc. I already have Lanvin L'Homme I'm not sure these would be considered "usual".
If you're of the male gender, I'd recommend Cacharel L'Homme, It's not a sleeper unless you've never tried it, but it is a very nice scent which would work well for spring and summer...and it doesn't cost a small fortune....but I don't know if you already have that because I can't see your wardrobe.

Answer:
Besides those already mentioned:
Terre d'Hermes - Applied lightly. Very pleasant, very inoffensive, and very unique.
Perry Ellis 360 Black - A true sleeper. A really good scent, fairly light and refreshing. I got this dirt cheap at TJ Maxx and am loving every minute of it.
Rive Gauche by YSL - Again, applied lightly. Makes you smell very clean and well groomed.
cK Be - Almost impossible to over-apply. Light, fresh, and good for all occasions.
Boss Bottled / #6 - Very delightful. Sweet, vanillic, and it has one of the best smelling apple notes in any cologne. It's real apple- not that synthetic Be Delicious / Reaction "apple" note. Very pleasantly surprised by this one.
Escada Magnetism - Again, applied lightly. Some say metallic grapes, I say nothing of the sort. More like a sweet wood with perhaps some unknown, mysterious fruit in there. Good stuff.
If I had to pick one, I'd go with the Rive Gauche. Sublime stuff.

Answer:
Santal Imperial by Creed, you can occasionally pick this up cheap on ebay or perhaps other online vendors.
A bit of citrus in the top and much natural sandalwood which does not project strongly at all, while it is soothing and clears the mind - good for flying, I should think. If anything your neighbor will suddenly think (s)he's travelling luxury class.
Light and inoffensive in the floral/transparent direction, but not very common: Rodier pour homme, Incanto by Ferragamo.
Edit: And,of course, there's always classic Eau de Cologne for situations like this: Guerlain Imperial, Asprey Purple Water, Roger&Gallet Cologne etc. pp. (see EdC thread).

Answer:
Citrus notes are are lovely and fresh, but some people can be severely allergic, so I'd advise against them...

Answer:
I'd go with YSL Rive Gauche with just a few sprays worn under your clothes.
Smells dignified and classy and the longevity is excellent.

Answer:
I second Eau Sauvage. Paul Smith Story would work well too.

Answer:
I'll agree that ck be is a great choice, also Bvlgari PH.

Answer:
No offense to those that mentioned Rive Gauche, but I just dont think it really fits into the "sleeper" or "non-offensive" categories.
RG has very nice sillage and I consider it a strong scent. As for it being a sleeper, I guess that's left up to the interpretation of the wearer, but it's definitely not a sleeper around here.
Just my two cents...

Answer:
L'homme de coeur by Divine, and
Atlantic by Strange & Invisble.
Both great scents that are there and yet not there.
Weird and fantastic.
Joe

Answer:
La Base For Him
It's subtle elegance for those who want to smell good without being obvious.