Looks like annual bluegrass to me... http://www.msuturfweeds.net/details/_/annual_bluegrass_47/ I do not think there is an easy way to control it, other than pulling it by hand or waiting for it to die with the heat. I am kind of new to this world and hopefully I am wrong, let's see what other more knowledgeable have to say Here is a link that might be useful: msu annual bluegrass

It's some sort of grass. The exact type doesn't really matter. The Bermuda looks completely dormant in that picture. If so, the easiest way to kill the weeds would be to use glyphosate (brand name roundup). Glyphosate will only work on plants that are green. It's a nonselective weed killer, so it will kill anything green that it ends up on, but if the Bermuda is dormant, it won't take the glyphosate in and kill it.

It might be pokeweed, Phytolacca americana. I can't tell from the photo. Here's a thread on pokeweed with some photos of a large plant: http://forums2.gardenweb.com/forums/load/namegal/msg0816284825135.html?14 Here are photos of younger plants: http://www.oardc.ohio-state.edu/weedguide/singlerecord.asp?id=270 If you can't remove all the root (which you must do in order to get rid of pokeweed), you can put a few drops of Round-up concentrate (or generic glyphosate concentrate) on it or pour boiling water in the hole with the root. If it sprouts again from the root, repeat.

It's a very blurry image. I would guess EITHER spotted spurge or spotted burclover.