I have many items on my @Calls task list.
Currently it is annoying to execute on the list - make the phone call:
1) click the task
2) edit the task
3) long-press the phone number: number is selected
4) long-press the number again - popup menu opens
5) select Copy
6) go to Dialer
7) paste the phone number and call

Suggestion:
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1) define tasks, or an entire list of tasks as Phone-Call Tasks

2) such task would have a big phone icon next to it (should be driver-friendly). clicking on it would dial the number in the task subject
OR -
the phone number appear as links - clicking them dials the number

3) nice to have: if the task conains a contact name, lookup the contact in the phone book
(if I have more than one "John Doe" in my contacts, let me pick from a list)