Hyacinths, philadelphus, roses, honeysuckle, lily of the valley, sweet peas - in a large tub by the front path. Also a few dianthus which seriously need thinning, their scent is very nice, but too near the (acid) ground!
Some cuttings of viburnum Dawn & a Daphne.
I've never liked the look of nicotiana, that's a good idea Bob - hide them amongst others! I'm with you on the roses, Dove - they must be scented.
Can't stand the smell of mahonia!