Here's my personal Top Ten (in Scotland - otherwise in the UK, the Glyders, Tryfan, the Nantlle hills, Cnicht, Moel Siabod, the Rhinogs, Cadair Idris and Blencathra would also be in my list.)
These are a bit "alternative" - I don't think any of them make the WH Top Ten list!
Sgurr a'Mhaoraich - not the most fashionable hill but the ascent is easy and builds in drama with every step - to a summit with mesmerising views of Knoydart, Kintail, Lochaber and the Inner Hebrides.
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Half Man Half Titanium, on Flickr
Beinn na h-Eaglaise (Torridon) - a beautiful approach via Coire Roill, and then so many humps, bumps and hidden lochans to discover on the ascent, and stunning views over Glen Torridon, the Coulin Forest and the sea. Magical.
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Tim Pearce, on Flickr
Sgurr a'Mhaim - climbed this with my wife, her last Munro walk before bad knees set in. So very special for me. In this view from Aonach Beag, it's on the right above a cloud-filled Glen Nevis. A very old photo!
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Half Man Half Titanium, on Flickr
Sron a'Choire Ghairbh - another unfashionable one, but it's such a pleasant easy ascent... we walked up in cloud, and then saw the inversions from the summit...
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Half Man Half Titanium, on Flickr
Quinag - a brooding, strange-shaped mass above the wilds of Assynt
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Tim Pearce, on Flickr
Ben Starav - the whole circuit of the valleys and ridges of this hill was extraordinary for its variety and scenery on an Alpine scale
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Half Man Half Titanium, on Flickr
Lochagar - a great walk with superb cliff scenery. Even its unpopular neighbour Carn a' Choire Bhoideach has the wonderful Stuic, poised high above the Dee valley.
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Half Man Half Titanium, on Flickr
Beinn a'Chochuill - such an easy walk, leading to such amazing and varied views in all directions - this is south from the summit to the Ben Cruachan peaks
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Half Man Half Titanium, on Flickr
Creag Meagaidh - Coire Ardair is wonderful, but so to is the approach walk through the regenerated native forest.
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Half Man Half Titanium, on Flickr
Stob Coire an Laoigh, Grey Corries - reached via a rollercoaster ridge-walk with wonderful views in all directions
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Half Man Half Titanium, on Flickr
For favourite scrambly routes, I would say Curved Ridge, the CMD Arete, Little Gully on the east face of Tryfan, Daear Ddu on Moel Siabod and Grib Lem on Carnedd Dafydd. The hardly-a-scramble to the top of Bruach na Frithe was also wonderful.
Least favourite hill - probably The Cairnwell because of the awful despoiled summit. But that's man's fault, not the hill's! Least favourite used to be An Caisteal, but that was my mindless prejudice, based on falling waist-deep into a pool of slime. A second visit has made me a big fan of this fine hill.