Question
I am not sure of the name of four bushes in our landscape that have developed sticky yellow semi-transparent egg-like infestations that seem to be connected to the leaves. There are hundreds of them on  each bush.  

Answer
what you have on the bushes may very well be eggs of beneficial bugs(sounds like ladybug egg cases). to be certain snip off a small section of a branch w/egg cases on it, seal it in a plastic bag, and take it to your local garden center for ID. if they aren't sure what it is go to another garden center that does. it's not wise to just spray when you see bugs on ornamental plants. horticulture people are learning that our best hope to control most bug pest is by utilizing beneficial bugs and let nature do its' work. integrated pest management(IPM) is the big buzz-word in pest control in the new millenium. 1st you have to ID the problem pest so you know how to best get rid of it. chemical pesticides are necessary sometimes, but sometimes they do more harm than good. usually it is not good to indiscriminately spray all bug infestations. many bugs(over 99%) are actually beneficial. ID the problem pest 1st.
hope this helps.
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good luck
rick