Perfect for fan trained fruiting plants like fig (Ficus carica), blackberries, peaches, plums, etc.

Taller flowers would tend to lean out away from the wall toward the light (unless it's painted white), also the wind will have the same effect so I would go for bushy plants and low growing things like Alpines. There are many plants that would love such a warm protected site but it might be a good idea to check the Ph of your soil before you choose.