Question:
Blenheim Bouquet (Penhaligon's)
[...only female consumer I could imagine: perhaps Maggie Thatcher...]

Answer:
Originally Posted by DesGrieux Blenheim Bouquet (Penhaligon's)
[...only female consumer I could imagine: perhaps Maggie Thatcher...] I love, and second Blenheim Bouquet.

Answer:
Rose 31, vetiver46 by le labo
Lime Oud by Montale.

Answer:
I fourth(?) Bois du Portugal and add M7 and GPH to the party.

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Originally Posted by Redcomet I fourth(?) [...] - -

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I'll Nth BDP and Vendetta, and add both vintage taberome and santal noble

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Originally Posted by neal Looking for some new ideas for the most masculine scents. Along the lines of Vintage Tabarome, Santos, Quorum, Sybaris, Fendi, Trussardi. You know - heavy, masculine stuff. Nothing fresh or acquatic. Originally Posted by neal Neal Chanel Antaeus, Pour Monsieur; Hermès Bel Ami.

Answer:
Yatagan
Kouros
Van Cleef and Arpels Pour Homme

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My personal favorites are:
- Yatagan (1976) by Caron
- Givenchy Gentleman (1974) by Givenchy
- Bel Ami (1986) by Hermès
- Cumming (2004) by Alan Cumming
- Polo Crest (1991) by Ralph Lauren (Sadly discontinued)
- Polo (1978) by Ralph Lauren
I'll give a weak recommendation to Bois du Portugal (1987) by Creed. I personally find it half as masculine and two to four times as expensive as my other recommendations.

Answer:
I'm not an expert in men's fragrances, but I think one of the most masculine scents besides (Old Spice, my Dad wore that when I was little) is POLO by Lauren. That to me, is the epitome of manly. Alot of scents in the past 5 years or so, have been more "unisex" to me. Honestly, even women's fragrances have become more sweet & girly. I don't personally like too much fruit & sugar to my scents. (Blue Sugar for Men, come on now) I like a woman to smell like a woman, (not a young girl) & a man to smell masculine. Too much gender bending for me, but that's just me.
Just to prove my point, I went to the Men's Dept. at Neiman Marcus today, and asked the salesguy if they carried, Gucci Pour Homme, which I smelled real quickly the other day in Sephora's, and really liked. He said, "no, haven't carried that one in awhile." I said, it is very masculine & woody, and like it very much. I said that it seems to me, that most of the scents lately have been more unisex & less masculine. He totally agreed with me, and said he noticed that too, and didn't particularly like that either. That's life...