Try Viburnum tinus, Euonymus fortunei, Rosa rugosa, Chaenomeles x superba (flowering quince), Cornus species (dogwoods), Eleagnus species, Aucuba Japonica and, so long as it isn't really shady, many Ceanothus cultivars will do well too. These plants are either evergreen or have year round interest (coloured foliage, stems, flowers, etc) For low level stuff Heuchera, Lamium and Bergenia varieties look after themselves and if you don't have a slug/snail problem Hostas look good. All should be readily availiable at any garden centre and can be managed with fairly crude pruning and are pretty fast growing and colourful.
If you like gardening then there are many, many more but I get the feeling you don't fall into this camp…..