Sorry to be a pedant once again, but Titus is in fact Elizabethan, not Jacobean – it’s generally considered one of his earliest plays. Where it does fit in, though, is with the popular tradition of the gory revenge play – for instance, Kyd’s Spanish Tragedy (written in the late 1580s). Shakespeare’s own Hamlet, of course, takes this tradition and turns it on its head, but Titus was his first crack at the genre – indeed, his first attempt at tragedy. It was probably written in the early 1590s.
On preview, I note that gobear has already covered this point. Ah, well. I typed that paragraph, so why waste my labor? 
And I don’t know, Coriolanus had some poetry that stuck with me – particularly Aufidius’ speech to Coriolanus when C comes to the Volscian camp:
Let me twine
Mine arms about that body, where against
My grained ash an hundred times hath broke
And scarr’d the moon with splinters: here I clip
The anvil of my sword, and do contest
As hotly and as nobly with thy love
As ever in ambitious strength I did
Contend against thy valour. Know thou first,
I loved the maid I married; never man
Sigh’d truer breath; but that I see thee here,
Thou noble thing! more dances my rapt heart
Than when I first my wedded mistress saw
Bestride my threshold. Why, thou Mars! I tell thee,
We have a power on foot; and I had purpose
Once more to hew thy target from thy brawn,
Or lose mine arm fort: thou hast beat me out
Twelve several times, and I have nightly since
Dreamt of encounters 'twixt thyself and me;
We have been down together in my sleep,
Unbuckling helms, fisting each other’s throat,
And waked half dead with nothing.
I mean, that’s good stuff.
(I should note, too, that my only experience with the play was through the RSC’s recent production, which was exceedingly well-done.)
BTW, one of my sisters claims that King John is her favorite Shakespeare play. John is one of the ten or twelve I haven’t read, but I told her she’s about the only person in the whole world who’d say that. (It’s amusing, too, that she thinks I’m weird because my favorite play is Richard II…)
The thing about threads like this is that I always feel compelled to come in and play Counsel for the Defense. Haven’t even started on Dumbguy’s assessment of Henry V… 