Herbs that add spice to a garden

I've never even heard of "lemon balm," but I like the idea of an herb reaching 90 cm:

Native to southern Europe, the lemon balm (Melissa Officinalis) attains a height of around 60-90cm. Melissa comes from the Greek for 'honey bee' and the lemon balm has the same healing and tonic properties as honey and royal jelly. In the garden, it is wonderful, planted to the front of a border where you can easily brush against it to release its intoxicating lemon-scent.

Link: Gulf Daily News.