Congress and the president struck a last-minute deal and averted the fiscal cliff for the time being. And, just as several tech companies had been some of the worst to languish and suffer under fiscal cliff concerns, with many companies reducing IT expenditures in the face of tax uncertainty, now that the immediate danger has been alleviated, the tech sector is one of the biggest rally stories emerging from the aftermath. In this video, Motley Fool tech and telecom analyst picks three companies that had already been beaten down a bit, and then further by the fiscal cliff concerns, only to rally today big: Hewlett-Packard (HPQ -1.25%), AMD (AMD 6.55%) and Seagate Technologies (STX). He then warns that while short-term gains are nice, a closer look at the investment theses here might be necessary.