So we have.. a lone blue flower, big rather hideous mat of something, a plant that has Japanese Anemone-ish leaves, a vine with large green leaves (ignore the california lilac growing under it), and the leaves on a leggy shrub/tree.
5. Pretty sure it is a Hamamelis x intermedia cultivar. Please can you have a close look at the base of the leaves, I think I can see the flower buds ready for next spring. Common name witch hazel.
5. Hmm I'm leaning a tiny bit more towards the parrotia persica. The leaves on parrotias seem to be a little bit longer: http://upload.wikimedia.org/wikipedia/commons/c/ca/Parrotia_persica_JPG.jpg And a little too short on the witch hazel: http://www.candbsupplies.ca/witchhazel.jpg And unfortunately I don't have the tree nearby to go take a look now, but when I zoom in on the pic, it seems the buds are just leaf buds, lacking that curly drooping nature seen in the pic Luddite posted. :)
#4 - Agree with Vinca major, not Hedera. Note opposite leaves (alternate on Hedera). #5 - Agree with Hamamelis sp., not Parrotia.