It's annoying that ctrl-A / select all doesn't work, which means that adding a load of clips means ctrl+E.. release ctrl key.. down arrow.. ctrl+E.. release ctrl key.. down arrow.. ctrl+E.. release ctrl key.. down arrow.. ctrl+E.. release ctrl key.. down arrow.. etc - very RSI carpal tunnel inducing 
There's an easier way :
* Click the first clip in the list
* ctrl+shift+End selects them all!
* ctrl+E adds the lot to the timeline
HNY 