A long list of feminine fragrances (and several masculines) use ylang-ylang. Ylang-ylang lifts oriental notes and softens/rounds harsh notes. It blends especially well with jasmine. Most of the classic feminine Chanels (5, 19, 22, Bois des Iles, Cuir de Russie) contain iris, ylang-ylang, jasmine, and rose. The iris in the classic Chanels and many of the Exclusifs is the best you can smell. The dominant floral in Cuir de Russie is iris but the ylang-ylang is more noticeable in the new Exclusifs version than it was in the vintage versions. It's still a compelling fragrance but not nearly what it used to be once Chanel attenuated many things including most of the birch tar (upon which the fragrance is based), the great raw and vitalizing clary sage note, the hints of something urban and rubbery that lifted everything even higher, etc. As well, the Exclusifs version almost leaves the civet smelling as if the fragrance was built around it rather than the birch tar. The civet is substantial in the vintage formulations but more tightly integrated smelling more like healthy sweat and just serving its purpose which is mainly to smooth and maintain a fleshy warmth. Civet and castoreum are far more common in the feminine classics. It's one of many reasons why they tend to be bigger and better compositions.
The curent Cuir de Russie is still an excellent example of the best materials in the world but it's more of an iris floral animalic, or iris-ylang-jasmine floral animalic with great balsams, louder civet, and distant leather accents. The vintage formulation is probably the best fragrance I've ever smelled, but I can't say the same for the new stuff. Athough it still retains a lot of the same intelligence, it's somewhat feeble (in smell, not structure) and almost gives me the impression that I'm smelling saliva and faint fecal remnants.
Regardless of your perceptions of ylang-ylang, it's an amazing essential oil when used correctly (I usually just smell it from the bottle). It smells great and is very calming, soothing, and mood lifting.
Bandit uses a lot of ylang-ylang and civet, as does the original Montana Parfum de Peau. Both are fairly animalic leather chypres if you get the right formulations. Joy and No. 5 are excellent examples of ylang and civet, but they aren't chypres. They are amazing fragrances, though! If you haven't tried both of them in parfum then you are missing a huge part of what great perfume is all about. Tiffany for Men is a great men's fragrance that has a significant but mellow ylang-ylang note.
This is a fairly accurate notes pyramid for the vintage formulation of Chanel Cuir de Russie:
Top: Bergamot, mandarin, lemon, clary sage, orange blossom
Middle: Carnation, orris, jasmine, ylang-ylang, cinnamon, spice bush, rose de mai, vetiver
Base: Silver birch, juniper, civet, cedar, tobacco, opoponax, styrax, amber, musk
scentemental should have some good things to say about this, so hopefully he'll be around.