100% agree re. Prof. Snape - that voice, those swishy black robes, those buttons, deeply flawed yet heroic wibble
YY also to John Simm. Not usually my type at all but def something about him.
Also Andrew Marr, Alastair Campbell, Jeremy Paxman ... I'm a sucker for brainy and lippy.
Prof. Brian Cox, poss. more mainstream but not everybody's cup of tea.