This may not seem like much, but it's a little trick that I like to do on occasion. Sometimes I like a slow, long delay just on certain words or syllables, but sometimes on the long delays, the intelligibility suffers as it goes on. So, I zoom in on the syllable or word, cut it and paste it on a different track. Then I copy it however many times I want it to repeat, and place them so they're exact with the beat. Then I automate the panning so it alternates hard left and hard right. Then I automate the track volume to fade it to my liking. That way the main vocal retains it's original quality, but I can use this trick to bring out certain words/syllables without losing the clear quality as the delay fades out.

I remixed a song one time using a 2 second delay, the results were stunningly beautiful. It made the song sound like two separate people were singing it, one delayed.....the timing of the song worked out perfectly. 

As trivial as this may seem, it's something I use on every midi editing session:
 
Using Keyboard command "[" and"]" (square brackets) to enter +10 or -10 increments in the Event Inspector, Note Properties data fields.
. . . it also works for entering + octave and - octave entries.
 
This has always worked in Cakewalk products, even though it is not assigned in Keyboard Shortcuts.

Scrub tool. I bet many don't know it even exists the feature is so hidden.

Here's one:  Length -
 
I use that fairly often, and most typically for runs on a piano, or a harp.  I'll run my finger over an octave or two of notes, wanting to run into the next section of a piece, but it'll come out short or too long.  Lasso the notes in PRV, and by selecting to change the start times, usually not the length of the notes, I'll take a guess at what percentage will make the run end up where I actually wanted it.  It usually takes a few tries, but it doesn't take long to make that dramatic run more effectively in the pocket.  Kinda cool hmm?
 
Another common usage for it is to play something like a timpani roll.  I'm using a Garritan timpani that has left and right hand strokes two octaves apart - and I'm drumming my little heart out to do the roll, but not concerned with if I'm actually playing it fast enough.  With the Length control, I change the clip so it's about half as long.  Copy and paste that for how long the roll should be, then sweep through the velocities so I have the build I want.  The timing is semi-sloppy and "humanized" since I played the notes, but now the roll is slicker than I could do in real time.
 
Randy B.

CakeAlexS
Scrub tool. I bet many don't know it even exists the feature is so hidden.

Scrub Tool would be a great feature if it worked per take lane. Unfortunately it's a track-based feature so scrubbing a lane plays the other lanes in the track too unless you mute them.

Yeah, I got to say, I never ever use Cakewalk's implementation of Scrub. It could be I just don't understand it enough. idk.

As most know I am a huge user of the old standby BOOST11 to punch my mixes, I just know what it does and it does it well and easy. I love the tempo-synced loop browser also. Hey there are some great samples in SONAR PE, get in there and play around! -Shawn

I like using the metronome count in function but muted as AD plays while recording.
A quick humanize is also to manually record one of the AD kits pieces.
Recently I got the percussion pak especially.
 
I like single delays as in the old cakewalk echo/delay. (Bring it back 64bit). A nice and simple way to give a DI'd track or clean synth some depth in the digital world.  Usually just over over 50% 3-5 ms time shifts and the like. Good for putting a track further back in the mix.
 
Another is a fairly wet Breverb heavily compressed to contain its spill somewhat with  some high and low shelves making it more natural until you automate the panning to get attention.
 

Best feature ever added to SONAR was freezing the horizontal scroll when you manually edit an automation envelope during playback. Runner-up: global effects bypass.
 
Most useful effect plugin ever bundled with SONAR: Channel Tools. 
 
Most underrated plugin: PerfectSpace. Runner-up: Sonitus Modulator.
 
Most under-appreciated feature: automatic plugin delay compensation. Runners-up: drum maps and slip-edits.
 
Best bundled software instrument: Dimension Pro. Runner-up: Studio Instruments Bass.
 
Most-used feature: CTL-Z.